Why is the temperature gauge on my car not working?

If you know the engine temperature is not an issue, you probably have to deal with one of these problems; The temperature sensor/sending unit is faulty. If this is the case your sensor will be reading the coolant temperature incorrectly and sending the wrong signal to the gauge.

Why is my engine temperature reading so low?

The most common problem when it comes to a faulty engine temperature reading is the coolant temperature sensor itself, sending the information to the cluster. Some cars have two temperature sensors, while other car models have one.

What causes an engine temperature sensor to go off?

1. Faulty Engine Coolant Temperature Sensor. The most common problem when it comes to a faulty engine temperature readings is the coolant temperature sensor itself which is sending the information to the cluster.

Why is my engine temp not working on my Silverado?

I have a 2014 Silverado Z-71. One day I noticed the cooling fans staying on longer after engine shut off, thought nothing of it. Then one day the check engine light was on so I had the codes ran and it said it was either the thermostat or the temp sensor, but then the light went off and all was good.

Why is my engine temp gauge not working?

Then one day the check engine light was on so I had the codes ran and it said it was either the thermostat or the temp sensor, but then the light went off and all was good. The next day the temp gauge wouldn’t work so I changed the sensor but that didn’t fix the problem.

Where is the temperature gauge on a GM Truck?

Temp. gauge on dash stays completely at the far left/bottom. On startup (when key turned to start) the guage will briefly peg out to far right, but returns to left as soon as engine starts. checked coolant level (Overflow reservoir was empty, so I filled it to the “cold fill” line.

What should I do if my engine temperature sensor is not working?

The guage should stay to the left. Now with the key still on, momentairly ground that wire to the engine. Your guage should peg out. If it does both of these correctly, then you need a new temp sensor. If it does anything else with either of these two tests, then it’s a dash cluster/guage problem. Check your thermostat first!

Check a wiring diagram of your car to measure the wiring correctly. The next problem is a faulty temperature gauge. However, most temperature gauges are integrated with the instrument cluster on modern cars. In some cases, you can replace the temperature gauge or repair any bad solderings if you find any.

How can I tell if my light gauge is hot?

Check the gauge if the needle moves toward “Hot”, the wire from the gauge to the sending unit has an open or bad connection. If it does not move, connect a test light by grounding one end to a good known ground and the other end to positive side of the gauge (typically a pink wire).

Is it safe to drive without a temperature gauge?

It’s not safe to drive without a temperature gauge, but you may want to try an aftermarket solution in the meantime, so you can keep an eye on the temperature. You don’t need to make a permanent installation; just secure it properly and use it while you wait for the replacement.

What does the Check Engine light mean on a Honda?

The check engine light is a light that the engine computer uses to signify that there is something wrong. They are orange, amber, or yellow, and not to be ignored! The only way to “reset” the check engine light is by fixing the problem causing it. Thus, the 10 reasons I list below may help you reset your check engine light.

Where do I find the temperature warning light on my car?

You will find it on the dashboard gauge cluster. It looks like a thermometer or shows the word ‘temp’ or ‘engine overheating.’ Whenever these words flash or the sign lights up, your car is in danger. The computer system of your vehicle monitors the overall fluid level and the coolant temperature.

What causes a car temperature gauge to stay on low?

What could cause the temperature gauge to stay on low? The most common causes of why the temperature gauge stays on cold are faulty coolant temp sensor, faulty temperature gauge, broken wires, bad thermostat , and air pockets in the cooling system.

What are the warning lights on a Honda?

The following are warning lights and indicators found in vehicles built by Honda. Click a link to learn more about each one. They are roughly ordered by importance, which tends to be by color (red, amber, yellow, orange, green, blue, gray).

Where is the coolant temperature sensor on a Honda Civic?

So continue reading to keep the ECT sensor in your Civic working as it should. This article applies to the Honda Civic (1992-2000). Your Honda Civic’s engine coolant temperature (ECT) sensor is located in the front right section of your engine block. The engine control module (ECM) uses this sensor to constantly measure the engine’s temperature.

Why is my factory tach not working properly?

The most common problem for tachs is that they get disconnected from the distributor. Connect the factory tach and inspect the wire through the tach filter to the firewall. If you don’t find a problem there, your problem lies in the dash or the tach itself.

What to do if your gas gauge does not move?

Why does my thermostat not read the temperature?

A broken thermostat will throw your temperature gauge off. Because the thermostat restricts the flow of coolant through the radiator, it typically gives accurate readings of the temperature. However, if the thermostat gets stuck open and is no longer able to restrict the flow, it may continue to read cooler than the actual temperature.

What should you do if your temperature gauge is not working?

The first thing you always need to look at with a strange reading on your temperature gauge is giving a strange reading is the actual temperature of your engine. Always rule that out first before focusing on the gauge itself. If you know the engine temperature is not an issue, you probably have to deal with one of these problems;

Why does my car temperature gauge go up and down?

If the Temperature Gauge Goes Up and Down You may notice that your temperature gauge reading goes up and down, fluctuates in some kind of pattern, or is erratic. There may be several reasons for this: Low coolant level delaying thermostat opening and closing (check coolant level in the radiator).

Why does my temperature gauge read 30-50 ohms?

If the sensor reads 30-50 Ohms when the engine is hot then there may be a problem with the wiring back to the gauge or with the gauge itself. Make sure the engine is turned OFF and that the vehicle’s ignition key is in your pocket when you test the sensor.

What should the temperature gauge read when the engine is hot?

With a hot engine it should measure 30-50 Ohms. If it reads approx. 140 Ohm (or more) when the engine is both cold and hot then the sensor is faulty and needs to be replaced. If the sensor reads 30-50 Ohms when the engine is hot then there may be a problem with the wiring back to the gauge or with the gauge itself.

When does the temp gauge needle go up or down?

Currently has 204,000 kilometres (127,000 miles) When the car is on a stop and idling, the temp gauge needle goes up steadily, and when the car is running, the gauge goes back to normal just as fast. When the temp gauge is on hot and I rev the engine, temp gauge needle goes down a little bit.

Why is the temperature gauge on the dashboard not working?

Thus, the temperature gauge on your dashboard is your window into the coolant temperature as seen by the temperature sending unit. It lets you know when the engine is cool, at operating temperature, overheating, or fluctuating. The sending unit is a thermistor. It is exposed on one side to engine coolant.

What should I do if my temperature gauge keeps going cold?

In some cases, you can replace the temperature gauge or repair any bad solderings if you find any. In other clusters, you might have to replace the instrument cluster. You can often leave your instrument cluster to an expert to repair the soldering if you do not know how to yourself.

What does it mean when your car thermostat is low?

With the thermostat stuck open, the engine can be overcooled, causing a low temperature reading. If this is the case, the thermostat may need to be replaced. If your temperature gauge is reading high, it means your car is overheating. This is a very serious matter and you should never drive an overheating car.

How can you tell if your car thermostat is working?

Check if the measurements are within 10° F (18° C) of each other. Look at the temperature of the engine and the upper hose after your vehicle has run for 10-15 minutes. If the temperatures are within 10° Fahrenheit (18° Celsius) of one another, then the thermostat is working properly.

What happens if your engine thermostat is too hot?

Thermostat, that fits in Toyota A, E, S and C engines. What Does the Engine Thermostat Do? If a car’s engine is too hot, it can actually warp and become damaged. But, when it’s cold, it doesn’t run efficiently. So, it is important to keep the engine at the right temperature, which is where the thermostat comes in.

When does the car temperature gauge go up?

Your car temperature gauge goes up from 100 to 200 degrees F in 3 to 5 minutes after your car engine starts running, that is normal, because your car thermostat is close.

Is it normal for the temp gauge to go past half way?

Diesels do run slightly colder, but around half is fairly standard on every car I’ve owned. The gauge doesn’t have useful information, that’s why a lot of cars don’t even bother putting temperature range on them.

What should I do if my temperature gauge reads 50 ohms?

What to do if your car temp gauge is not working?

Bypass Temperature Sensor – Connect a jumper wire between the 2 pins of temperature sensor harness connector. If temperature gauge indicates hot, replace coolant temperature sensor. If temperature gauge does not indicate hot, go to next step. 3. Check Red/White Wire For Short To Ground – Turn ignition off.

Why does the temperature gauge stay on cold?

Air in the coolant system can also cause the temperature gauge to stay on cold if there is an air bubble right at the sensor spot. This can also often be indicated with a fluctuating coolant temperature gauge. If you suspect air in the coolant system, you have to bleed your coolant system with a unique technique.

How to check engine temp on Jaguar X350?

TonyXJR bought a thermostat kit and changed it quite successfully. Also 57jam89 in the S Type forum describes a process for checking engine temp using the button on the indicator stalk, i’m going to see if that works on the X350. After i’ve checked I have a button on my indicator stalk!!!!!

What was the problem with the Jaguar XJ8?

Another critical problem of the Jaguar XJ8 was its fuel system. The problem had originated from the fuel filter’s connector because the o-ring wasn’t seated correctly on the fuel line. Thus, the inadequate sealing has resulted to a fuel leak.

What causes an engine temperature gauge to stay on cold?

Reasons Why your Engine Temperature Gauge Stays on Cold 1. Faulty Engine Coolant Temperature Sensor 2. Faulty Gauge/Cluster 3. Broken wires to the sensor or to the gauge 4. Bad Thermostat 5. Corrosion in connectors 6. Air in the coolant system 7. Broken engine control unit

Why is my Ford coolant gauge not working?

A lot of Ford’s have 2 different coolant temp sensors. 1 for the pcm and 1 for the gauge. They are NOT interchangeable. One or both may be bad or they may be the wrong ones. Was this answer helpful? Similar prob: 94 toyota truck my gauge says cold. Idle high at stop lites. It was overheating and took therma out.

What does it mean when your temperature gauge is high?

If the temperature gauge reads high, it could mean your engine is overheating. Another reason your reading might be high is you could be losing coolant. A small leak or evaporation may cause your radiator to slowly lose coolant.

Why does the temperature gauge fall at idle?

The difference might be that at highway speeds, the air blows hotter, but doesn’t at idle. This would mean air pocket in the coolant. if the air blows the same in both schemes, but the gauge still falls, remove the thermostat, ad drill a small hole thru it, max 1/8″.

Why is my thermostat reading up and down?

A contaminated coolant system will cause inconsistent readings and requires a full bleed of the system to repair. If you have air or something else in the lines, your gauge will probably be reading up and down as it passes through or stay cold if air bubbles get stuck on the sensor itself. A broken thermostat will throw your temperature gauge off.

Why does the temperature gauge go up and down?

Temperature gauge goes up and down temperature suzuki v6-… The temperature gauge is going up and down. Hello. If the coolant temperature gauge is constantly fluctuating then the most common cause of this is a bad thermostat. If the thermostat is sticking or not opening and closing right then this will occur.

Why does my coolant gauge keep going up and down?

If the coolant temperature gauge is constantly fluctuating then the most common cause of this is a bad thermostat. If the thermostat is sticking or not opening and closing right then this will occur. It can also be a clog in the radiator or a water pump problem.

What causes a car’s temperature gauge to overheat?

This caused the gauge to wildly swing between normal to overheated. Problems such as an electric cooling fan malfunction, or low coolant, or perhaps a blown head gasket just result in overheating rather than fluctuation . There are several possibilities. 1) faulty teperature gauge. In this case the gauage will have to be replaced.

Where does the temperature gauge go when the thermostat closes?

The temperature gauge electrical sender is positioned next to the thermostat, so it indicates the drop from 75 down to 70, when the thermostat closes. The whole process repeats regularly in a process called hysteresis.

How can I tell if my coolant temperature sensor is bad?

To diagnose the coolant temperature sensor, you need a repair manual for your car model to find what measurement values you should expect from the coolant temperature sensor. Connect an OBD2 Scanner and look for related trouble codes. Check the live data to see the temperature from the sensor.

How does the fuel gauge on a jeep work?

The fuel gauge on your Jeep is powered by the fuel sensor relay. If the fuel gauge in your Jeep stops working, the relay has gone bad and needs to be replaced. The fuel sensor relay is responsible for powering the sensors that, in turn, relay information to your fuel gauge.

What’s the Flash code on my Jeep Grand Cherokee?

Code 26 – Governor Pressure Sensor Offset Drift Code 55 – End of Message You may or may not be skilled enough to actually fix the problems indicated by the flash codes yourself, but you’re better-armed with an understanding of where the issues lay as you seek help from a mechanic.

Why is my Jeep Grand Cherokee not shifting?

Matthew Wright has been a freelance writer and editor for over 10 years and an automotive repair professional for three decades specializing in European vintage vehicles. There is a common issue with shifting on a number of Jeep Grand Cherokee models as they age and their mileage increases.

Where is the fuel sensor relay on a Jeep Cherokee?

Lift your Jeep’s hood and remove the negative battery cable. If your model Jeep has them, unclasp the two clamps that hold the relay panel lid on. Do this by hand. The main relay panel is located near the battery. Pull the relay panel lid off. Pull out the old fuel sensor relay.

What’s the normal temperature for a car temp?

Temperature Gauge is Normal When the engine is functioning, and the coolant is doing its job, the temperature gauge needle should be somewhere in the middle between the hot and cold indicators. “Normal” temperature reading can vary from vehicle to vehicle so don’t be alarmed where yours settles.

Do you know if your car is running hot but not overheating?

Most drivers look at their temperature gauge so rarely that many vehicle manufacturers don’t even include temperature gauges any more but just lights that will come on if your car is either extremely cold or extremely hot. However, if your car is running hot but not overheating, you might not know it without a gauge.

Why does temperature gauge not working?

There are many reasons your car’s heater isn’t working. Maybe the fan is malfunctioning. Perhaps your temperature gauge is running below normal. There could even be a puddle of liquid under the front of the vehicle. A lack of heat can be a symptom of a much larger problem.

Why is my car engine temperature running low?

If the temperature gauge still reads cold after the engine has warmed up, the gauge may simply be broken . Another reason the temperature gauge could read cold is if the thermostat in the vehicle stays open. With the thermostat stuck open, the engine can be overcooled , causing a low temperature reading.

Why is the coolant temp gauge not working?

What happens when temperature gauge goes into red?

There’s nothing quite as scary as suddenly noticing a temperature gauge venturing into the red. Once an engine reaches a certain temperature, parts can begin to seize, warp or score, all of which are catastrophic in automotive terms.

When does the temperature gauge go back to normal?

Q: Temperature gauge spikes up after driving for about 5–10 minutes, then returns just as quick to normal. Temperature gauge spikes up after driving for about 5–10 minutes, then returns just as quick to normal.

What causes the temperature gauge to spike up?

Temperature gauge spikes up after driving for about 5–10 minutes, then returns just as quick to normal. Happening more lately wheezing traffic causing engine to sound likes it’s working harder to accelerate and temp fluculates My car has 100500 miles. My car has an automatic transmission.

Why does the temperature gauge fluctuate when the thermostat closes?

What causes a needle gauge to read incorrectly?

You mentioned the electrical system which actually can cause needle gauges to read incorrectly. If you can thump the gauge with your finger and cause the needle to jump to and remain at a different reading then suspect a loose or dirty connection at the back of the gauge.

What should the temp be in my car?

6. Checking the Temperature Sending Unit Temperature Voltage 110F (43.3 C) 4.2 140F (60 C) 3.6 180F (82.2 C) 2.8 210F (98.8 C) 2.2

Is the temperature in the middle of the gauge normal?

It’s a mistake, however, to think that this type of gauge is giving you an accurate readout of your car’s motor temp. In fact, that middle section of the gauge, between the cold and the hot readings, can represent a wide range of temperatures that the car’s computer interprets as “normal.”

What should I do if my temperature gauge starts to rise?

Start off and head toward a highway. Have the heat on HI, with the fan just enough ON so you can feel it. Then watch your gauge and air temp as the car warms up. the air should get warm in just a minute, before the gauge starts to rise. The, as the gauge rises, the heat will stabilize at HOT. then, if the gauge falls, what happens to the air temp?

What does intermittent mean on car temperature gauge?

The code indicates that a wire from the engine coolant temperature sensor, is shorting to ground, or open, somewhere. Of course, “intermittent” means: sometimes. The engine computer, in response, turns on the engine cooling fans, to lower the reported hot engine coolant temperature.

How to know the temperature of your car?

When do temperature gauges go up after driving?

Temperature gauge spikes up after driving for about 5–10… Q: Temperature gauge spikes up after driving for about 5–10 minutes, then returns just as quick to normal. Temperature gauge spikes up after driving for about 5–10 minutes, then returns just as quick to normal.

What do I need to test my coolant temperature sensor?

All you are going to need is thermometer and voltmeter to test the temperature sensor. The coolant temperature sensor will show different om reading at different temperatures. We will include the graph in the video so you can use it to test your temperature sensor.

What to do if your car coolant is not working?

If both upper and lower radiator hose have about the same temperature, coolant is not circulating (overheating) or the thermostat is stuck open (engine below operating temperature). Look around for potential signs of leakage. Check radiator hoses, radiator, and water pump.

What is the temperature of the coolant in an engine?

If your car model has two coolant temperature sensors, one is used by the temperature gauge, and one is used for the engine control unit. Engine temperature sensors are easy to measure with a multimeter, but you need to find the right values of them.

What would cause coolant temperature gauge to stop working?

The most common cause of faulty temperature readings is a broken coolant temperature sensor (CTS). The part, which is normally located near a vehicle’s thermostat near the base of the radiator (consult your owner’s manual or repair guide) can get gunked up and fail.

Why does my temp gauge not work?

One common cause of a temperature gauge that malfunctions is the thermostat. Sometimes the thermostat gets stuck open, which can cause the temperature gauge to “warm up” slowly, never move back down to operating temperature range, or fluctuate randomly. If the thermostat is not stuck open, it may simply need to be replaced.

What temp should an engine run at?

For most cars, the normal operating engine temperature is in a range of 195 to 220 degrees Fahrenheit, though most dashboard temperature gauges don’t show an exact temperature.

What is the normal engine coolant temperature?

The normal operating temperature of the coolant in an engine is about 210F to 240F degrees. The thermostat OPENS at 195F degrees; but, the temperature continues to rise to the normal operating temperature.

Can a broken Odometer be repaired on an old Mercedes?

Quite often I either hear about or see another broken odometer on an old Mercedes. Don’t lose heart! The repair can be done by you. There are usually one of 3 reasons why they don’t work. So follow along with my pictorial and fix it yourself. Safety and security tips:

Are there any problems with an older Mercedes?

Unknown battery drain, electrical shorts, blown fuses – these can be difficult to isolate! One of the most common problems we see on older Mercedes. Top problems for diesel owners. Kent recommends starting with the basics Yes, Kent has seen it first hand. Don’t neglect this! Could be any number of things causing the problem.

What do I need to troubleshoot my Mercedes Benz?

Troubleshooting fuel related problems is not very difficult and you can check the fuel pressure yourself. Checking the fuel pressure is very simple. For this test, you will need a fuel pressure gauge. What you need is a fuel pressure gauge with Schrader valve adapter.

Why is my car temp gauge not working?

What is engine temperature gauge?

The temperature gauge in your vehicle is designed to indicate the temperature of your engine’s coolant. This gauge will tell you if your engine’s coolant is cold, normal, or overheating. It is an important dial that is located on the dashboard of your vehicle.

What to do if your Lincoln gets hot?

The Lincoln repair manual actually suggest striking to module with a rubber mallet to remedy the problem in the short term. Nothing like opening the hood of your Lincoln and an giving it a good thrashing with a rubber hammer every time you want to start it after it is hot.

Why is my Lincoln Town car heater not working?

While there are a variety of reasons your Lincoln Town Car heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

How many temperature sensors does a car have?

Some cars have two temperature sensors, while other car models have one. The models with one sensor usually both use the engine control unit’s temperature and the same sensor for the gauge. If your car model has two coolant temperature sensors, one is used by the temperature gauge, and one is used for the engine control unit.

Why does my car’s temperature gauge keep fluctuating?

The radiator could be plugged, could have plugged cooling passageways, could have a defective water pump, loose belt issue, collapsed hose, excessive load on the engine due to dragging brakes, underinflated tires, and so forth.

Why does my truck shut down when it gets hot?

Same exact problem on my 95 f-150 4.9L. Runs great first start but after 2 miles or if very hot outside, it heaves and misses and eventually shuts down. Starts after sitting for 45 minutes again. I did replace rotor, cap wires plugs and coolant temp sensor as well as the starter. No fix.

Why does my AC gauge drop to cold?

That could cause the gauge to drop to cold since the IP gets its data from the BCM which gets it from the ECM. The ECT isn’t directly part of the A/C control logic since it only feeds the ECM.

When did engine not to start when hot start?

Engine Not To Start When Hot. Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Engine Not To Start When Hot. This topic contains 13 replies, has 6 voices, and was last updated by EricTheCarGuy 7 years, 6 months ago.

Where is the temp Guage and electic fan sending unit?

Installed the temp sender for gauge where the original one was installed on the driver’s side head. I also have A/C, so I installed a diode in the power lead to the fans to keep the current from “back flowing” to the relay when the A/C is turned on.

Do you need a temp switch for a dashboard gauge?

You have to get a dedicated temperature sending unit for a dashboard gauge. The temp switch you have now is only for the fans. yeah thats what i figured, now i gotta figure out where i should mount the sending units, cause it appears i only have 2 choices, drivers side head, and intake.

How does a coolant temp sensor work on a fan?

Coolant Temp Sensor – LH head. I have used a t-stat housing mounted fan switch with excellent results. Sounds like you hooked up a gauge to a temperature switch. That’s a problem right there. A gauge won’t run off a temperature switch. Also that temp switch supplies the switchable ground connection to the fan relay.

What causes a temperature gauge to stop working?

However, there are other reasons, for example: A bad temperature sending unit (the second most common reason) A problem in the temperature gauge’s electrical circuit A fault in the control circuit from the car’s computer (depending on vehicle model) A bad temperature gauge

What does it mean when your car gauges dont work?

When one gauge stops working, the problem may be in the gauge itself or a bad sensor , while all the gauges cutting out at the same time often indicates a blown fuse or a defective instrument cluster . The most common causes of the gauges in a car not working can be broken down into three scenarios: None of the gauges work.

What do you mean by temperature gauge is fluctuating?

Temperature gauge is fluctuating, sometimes showing overh… Q: Temperature gauge is fluctuating, sometimes showing overheating.

What should the syringe gauge be for primer?

When selecting needle gauge sizes it is important to keep in mind the volume of the syringe and the dead volume of the needle. For example, it will be very difficult to prime a 10 µL syringe if the dead volume in the needle is greater than 10 µL.

What is the size of a 26 gauge needle?

For example, a 26 gauge needle has an O.D. (outer diameter) of 0.46 mm and an I.D. of 0.26 mm while the 26s gauge needle has an O.D. of 0.47 mm and an I.D. of 0.13 mm.

How many miles does a Nissan Pathfinder get?

This is a 2000 4×4 Pathfinder LE. Bought new in November, 1999 and it just keeps going. Mostly highway miles to work and back 5 days per week. 32 miles round trip daily. This has towed a boat, a

Where can I buy a 1998 Nissan Pathfinder?

Find the best deal on a Nissan Pathfinder today. There are for sale near you. Certified child passenger safety technicians conduct hands-on tests of a car’s Latch system and check the vehicle’s ability to accommodate different types of car seats. The Pathfinder received the following grades on a scale of A-F.*

What kind of engine does a Nissan Pathfinder have?

All models come with a 170-horsepower, 3.3-liter V-6. SE Limited trims offer a choice of manual or automatic transmissions, while the others come only with automatic. All models come with either 2WD or a part-time 4WD system that is for use on slippery surfaces. This is a 2000 4×4 Pathfinder LE.

What should the outside temp be on a Nissan?

( It may read -7 when the real outside temp is 40) . After driving the SUV for 10 minutes plus the temp reading will gradually correct itself to the right value. If I then part the SUV for 10 minutes or so , restart the SUV, the outside reading will be low again. The dealer first said there was no issue.

Why does my car monitor the outside temp?

The reasons to monitor the outside temp is for two reasons : ONE; for example to save fuel if the system “thinks” the outside air is 20 degrees and the inside temp is 80 if the set temp is 70, there is no need to run the air conditioner to cool the car just let that 20 degree air in to reach the set temp of 70.

Why is the AC off but the temp is on?

Temp gauge is on cold, but the A/C off due to high engine temp gauge is on cold, but the A/C off due to high engine temp, yet not hot when I check engine. read more Gregg Lathem

Is the a / C on my GM truck really hot?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. I have a 2008 1500 4×4 4.3 V6 with 40000miles. Recently the ENGINE HOT A/C TURNED OFF warning pops up, but the engine isnt really hot. It seems to reset itself after a while.

What does the temp gauge say on a 2008 Chevy Equinox?

My 2008 Chevy Equinox indicator says “Engine Hot, AC off” and the needle on the temp gage doesn’t move from the bottom. The radiator fan stays on constantly while this message is displayed. My 2008 Chevy Equinox indicator says “Engine Hot, AC off” and the needle on the temp gage doesn’t move from the bottom.

Why is the temperature gage on my a / C not working?

A/c was blowing cold air for a few minutes then stopped blowing cold air but blow motor was blowing hot air. Next the temperature gage was not working. Disconnected battery for a few minutes and reconnected and the temperature gage is working and the a/c appears to be working.

Temp gauge is on cold, but the A/C off due to high engine temp gauge is on cold, but the A/C off due to high engine temp, yet not hot when I check engine. read more Gregg Lathem

How can I tell if my temperature gauge is inoperative?

To diagnose an inoperative temperature gauge, you’ll need to test the coolant temperature sensor and the wiring for that circuit. You should have a service or repair manual written for your specific vehicle prior to attempting these tests. You will need to drain and fill the cooling system as well as test specifically colored wires.

What should I do if my engine temperature light is on?

Check that you have sufficient engine coolant in the reservoir. Check the V-belt / serpentine belt is present, not lose or damaged. Check the water pump is working. Check that the coolant system is clean and doesn’t require flushing. If the engine doesn’t appear to be hot though the light is on, it could be faulty sensor.

What causes the Check Engine light to come on?

Problem seems to cycle – driving along, suddenly the check engine light comes on along with the electronic throttle control warning light, as the temp gauge drops to zero – which triggers the Check Gauges warning light to come on. Drive more, stop a few times, ETC light goes off, temp gauge starts working again.

When does the engine temperature warning light go out?

The symbol should briefly illuminate on your dashboard when you start the car and go out shortly after the engine has started. This is perfectly normal, but if the temperature light comes on while driving, immediate action should be taken, particularly if the symbol is red.

Why does the temperature gauge on my AC not work?

The temperature gauge dropping should not matter to the AC system as it only cares that the coolant temperature is below 253 degrees. However it could be a symptom of the problem.

Why is the temperature gauge on my trailblazer not working?

My question is to Ken the Administrator. In a previous blog about 2008 Trailblazer with a temperature gauge intermittently not working and setting code 128, you stated that it traces back to the BCM. Could you kindly explain how the BCM controls this?

Why does the engine light come on when the temp is low?

The final result was the Engine Coolant temperature sensor was faulty. It was sending low read reading to the onboard computer. Since the coolant temp sensor was replaced, no problems. 47 people found this helpful. electric connection or sensor problem , if the ecm cant get a proper temp reading it turns engine light on

What does the temp sensor on a Chevy HHR mean?

The A/C was now working and now all I needed was a check engine light reading (TEMP SENSOR/THERMOSTAT). The parts associate told me to disconnect the battery to reset it. I drove it for a few more miles to make sure everything was still working well and the check engine light disappeared.

Why is my Check Engine light not working?

Reduced gas mileage and stalling can also indicate a MAF problem. A MAF for a late-model car typically costs between $120 and $150. An aftermarket alarm can wreak havoc on your car if it’s not installed properly. It can drain the battery, trigger the check engine light, or even prevent the vehicle from starting.

Why does the temperature warning light stay on while driving?

temperature warning light stays on while driving but coolant levels and engine temperature are fine Check that you have sufficient engine coolant in the reservoir. Check the V-belt / serpentine belt is present, not lose or damaged. Check the water pump is working. Check that the coolant system is clean and doesn’t require flushing.

Why is the temperature sensor not working on my Chevy HHR?

No needle gauge reading and — reading for on board computer for engine temperature. I replaced the temperature sensor located on drivers side towards rear of engine (make sure to let engine cool down and use a drip pan) and it was still not working. I read how the on board computer can be tricked if any of the other other sensors are not working.

Why is the heat not working on my Pontiac Montana?

I have a 2001 Pontiac Montana with about 130,000 miles. A couple of weeks ago the heat stopped working and the temp guage was running on the high side. I started looking around for some information on this particular issue on the internet to see what could be causing it. Based on what I could find]

What should I do about my Pontiac Montana?

Hi the mechanic obviasly check the coolant level, that being ok. I would replace the thermostat. If your in a cold climate you can also block part the the rad, BUT YOU MUST HAVE A GAUGE TO KEEP AN EYE ON ENGINE TEMPERATURE!

Why are my dashboard gauges not working on my car?

Q: Could the reason for my dashboard gauges not working be a fuses and or fuses needing to be replaced? I was just wondering if the reason for my gauges on my car not working (gas, speedometer, temperature, RPM) would be because there may be a fuse that needs to be replaced

When does AC off temperature gauge stop registering?

“AC OFF” Temperature Gauge Stops Registering Temperature. “AC OFF” Temperature gauge stops registering temperature. Few days back I went on a road trip, 1200 km each way.

Why does my car overheat when I Turn on the heat?

By a large margin, the most common cause for engine overheating is simply a low coolant level. Your engine’s cooling system relies on coolant to circulate and remove heat from the engine. If you don’t have enough coolant in there to do the job, heat will build up and your engine will overheat.

Why is the thermostat on my car not working?

If you have a cool/warm hose but a hot engine, then you may have a clogged radiator or a malfunctioning water pump. It’s also possible your thermostat is stuck. If the hose and the engine are both warm, then that is almost definitely an issue with your thermostat being stuck.

How can you tell if your car has a bad air conditioner?

Another way to test the fan is to turn on the air conditioning. The cooling fan is activated in most—but not all—cars when you turn the AC to either a medium or high speed. Bad Radiator Fan Switch: There is a switch that tells your cooling fan to come on when your coolant reaches a certain temperature.

What does a water temperature gauge tell you about your boat?

Your boat’s water temperature gauge provides important information about your engine. The gauge indicates your engine operating temperature and tells you whether the engine is in danger of overheating. Unfortunately, the marine environment can cause the gauge or the sender to fail.

Is the temperature gauge hot but not overheating?

Temperature gauge hot but engine is not overheating. have the same problem? Have you checked your coolant level lately? I would start there. helpful? The temperature gauge can show hot without the engine overheating which still means that is a problem. To tell for sure if it is a gauge or a cooling system problem use a

Why does my car’s temp gauge read erratically?

A small air pocket around the sensor can have really erratic effects on the “gauge” temperature. Especially if the sensor is in the very top of a housing, where air may accumulate. Some thermostat housings have a small bleed screw to make this easier.

Temperature gauge is fluctuating, sometimes showing overh… Q: Temperature gauge is fluctuating, sometimes showing overheating.

The problem with a temperature gauge that doesn’t work properly is that you can’t tell which of these reasons are causing it to be faulty. You’ll need to do some digging, likely with a mechanic, to find if it’s the engine or the gauge itself that is giving you the readings.

What should the temperature be when the cooling fan is turned on?

The cooling fan should start running at approximately 230° F (110° C), which usually happens after 20 minutes of engine operation. If the cooling fan doesn’t turn on, it will lead to overheating. Compare the temperature of the engine head, near the thermostat, and the upper radiator hose.

Why does my car fan keep overheating?

The most likely reason for this type of problem is that your fan isn’t working, but the reason, and the fix, will differ depending on the car you drive. Intermittent overheating problems can also be caused by low coolant, air in the cooling system, a bad coolant temperature sensor, or even a faulty gauge.

What to do if your car temperature gauge is not working?

If your car computer acts as an interface between the sending unit and temperature gauge or warning light, turn the ignition switch off when disconnecting wires from the sending unit, warning light, or temperature gauge. You need to do this to prevent induced-voltage damage to the computer. Consult your vehicle repair manual. 6.

Why are the fans running but not the temp sensor?

The issue is in the temp sensor circuit. The fans running is because the ecm does not see a temp sensor so it assumes a hot condition. If battery disconnect solves the problem it is resetting the ecm (engine control module; i.e. computer). I will try it as I thought it would be an ecm issue. I have the same problem. I replaced the temp sensor.

What are the signs of a bad temperature sensor?

Common signs include a faulty AC auto mode, inconsistent cooling, and incorrect outdoor temperature readings. 1. The AC auto mode will not work 2. Inconsistent cooling 3. Incorrect reading on temperature gauge

What should the temp of the coolant sensor be?

Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm. Get a wiring diagram and find out what ohms you should have at a specific temperature to check the function.

When do I need to replace my ambient temperature sensor?

If the reading on the gauge or indicator is off by more than a few degrees, then the sensor should be replaced, as the incorrect reading may interfere with proper AC system functions. The ambient temperature sensor plays an important role in the overall operation of the AC system.

What’s the red light on the engine temperature gauge?

A temperature gauge that has a red light at the hot end of the temperature range. A red or yellow light that will come on and even blink when the engine temperature is too high.

What happens when the heater on a Volkswagen Golf stops working?

At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Golf, this process has failed in one way or another.

What causes a car to overheat in the garage?

Some of those possible overheating causes apply to both situations and these are among the easiest repairs you can tackle in your own garage. By a large margin, the most common cause for engine overheating is simply a low coolant level. Your engine’s cooling system relies on coolant to circulate and remove heat from the engine.

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