Where is the coolant sensor on a Jeep Cherokee?
Your Jeep’s coolant sensor (or at least the one that annoying light is referring to) is located in your coolant overflow reservoir. There’s something about the design that is almost guaranteed to cause a failure of some sort. Sometimes it’s the wiring, other times it’s corrosion at the plug. Then sometimes the sensor really us the problem!
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.
What’s the name of the coolant temperature sensor?
Coolant temperature sensors are also known as engine coolant temperature sensors or ECT sensors. The principle working of this sensor involves the use of an electrical resistance which measures the temperature of the coolant.
What should the coolant resistance be on a Cherokee?
Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero. Now raise the float up as if you had a full coolant tank — the resistance should be approximately 3.3 ohms.
Your Jeep’s coolant sensor (or at least the one that annoying light is referring to) is located in your coolant overflow reservoir. There’s something about the design that is almost guaranteed to cause a failure of some sort. Sometimes it’s the wiring, other times it’s corrosion at the plug. Then sometimes the sensor really us the problem!
Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero. Now raise the float up as if you had a full coolant tank — the resistance should be approximately 3.3 ohms.
Where is the CTS sensor located on a jeep?
Where is the CTS sensor located? On Jeeps there are two coolant sensors. There is one at the front of the engine in the thermostat housing, this one has two wires. Then there is another at the back drivers topside of the engine cylinder head just to the right of the valve cover, this one has one wire.
How to change the temp of the coolant sensor?
Also a way to vary the temperature of the sensor. Something like a pan of water on the stove top over low heat. Use a thermometer to measure the water temp as it climbs. Not the water temp as you measure the resistance and compare it to the chart below. See YouTube video at the bottom of the page.
What does bad light mean on Jeep Cherokee?
If you own a 1990s Jeep Cherokee there’s a good chance you’ve become intimately familiar with the Coolant Sensor Bad light on your dashboard. What does it mean, anyway?
How to reset your Jeep engine control module?
3- Once the time has passed you should now turn the headlights “on” and “off” twice to drain the Engine Control Module from any remaining power. 4- Now plug back in the negative terminal and your Jeep ECM should now be reset. To finish off this post , here are a couple of things you should keep in mind.
What are the symptoms of a bad coolant temperature sensor?
Hence, it is advised to have your car inspected right away to avoid any serious problems. Here is a more detailed list of the common symptoms of a bad coolant temperature sensor. One of the first symptoms you will notice is that the check engine light will activate.
What does the coolant temperature sensor do on an engine?
The engine coolant temperature sensor’s job is to measure the coolant temperature for the engine control module. With this information, the engine control module adjusts the air-fuel mixture depending on the temperature. This article will discuss the most common symptoms of a bad coolant temperature sensor, location, replacement cost,
If you own a 1990s Jeep Cherokee there’s a good chance you’ve become intimately familiar with the Coolant Sensor Bad light on your dashboard. What does it mean, anyway?
What does a bad light mean on a coolant sensor?
The Coolant Sensor Bad light is supposed to tell you when your coolant sensor is malfunctioning, and this protect you from an overheating situation that you can’t anticipate, followed by a warped head or other heat related breakdown that can be very expensive to replace.
The Coolant Sensor Bad light is supposed to tell you when your coolant sensor is malfunctioning, and this protect you from an overheating situation that you can’t anticipate, followed by a warped head or other heat related breakdown that can be very expensive to replace.
The engine coolant temperature sensor’s job is to measure the coolant temperature for the engine control module. With this information, the engine control module adjusts the air-fuel mixture depending on the temperature. This article will discuss the most common symptoms of a bad coolant temperature sensor, location, replacement cost.
What should coolant temp be when engine is hot?
With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. 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.
Are there coolant temperature sensors for Jeep Cherokee?
Your Jeep Cherokee will be happy to know that the search for the right Coolant Temperature Sensor products you’ve been looking for is over! Advance Auto Parts has 24 different Coolant Temperature Sensor for your vehicle, ready for shipping or in-store pick up.
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.
With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. 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.
Why does my Jeep Grand Cherokee have a heated O2 sensor?
The purpose of the heated element in the oxygen sensor is to quickly bring it up to normal operating temperature after your Grand Cherokee has been started. When it goes bad, it is more difficult for the engine to get the air fuel mixture right. Typically, the only symptom of P0161 is going to be the service engine soon light.
What causes the p0161 code on a Jeep Grand Cherokee?
P0161 is a very common OBDII code that occurs in the Jeep Grand Cherokee. It is typically caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 2 sensor 2.
Where are the sensors located on a jeep?
I’ve done some research and found wiring diagrams on this and other forums (many thanks) and am aware that all 4 sensors meet up at splice S146 which is apparently behind the right side of the engine and follow BK/LG wire through connector C104 (next to the fuse block) and then to ground G101 (inner quarter panel next to fuse block).
What does the MAF sensor on a Jeep Grand Cherokee do?
A MAF sensor measures the density of the air entering the intake manifold. It passes this information onto your Grand Cherokee’s ECU. The ECU uses this information along with other sensor data to control the amount of fuel that enters the combustion chamber.
What causes a Jeep Grand Cherokee to jerk?
Jerking – As you go down the road, you’ll feel your Grand Cherokee really jerk and hesitate as the engine speed changes erratically. It’s bad for your motor mounts when this happens. Also, jerking can be caused by bad spark plugs or coil packs. Decreased Fuel Mileage – Fuel mileage can suffer without the proper air/fuel mixture.
Where is the fuse box on a Jeep Grand Cherokee?
It is located behind the lid under the glove compartment. Back-Up Lamp Switch (Diesel), Vehicle Information Center, Graphic Display Module (Mini Overhead Console), Park/Neutral Position Switch, Speed Proportional Steering Module, Headlamp Leveling Switch, Combination Flasher, Automatic Day/Night Mirror, Overhead Console
What do I need to test my coolant sensor?
To properly test the coolant sensor, you’ll need a multimeter that can test for resistance, most do. Attach one lead of your tester to the black wire, and the other lead to ground. Remove the coolant sensor from the reservoir tank.
Also a way to vary the temperature of the sensor. Something like a pan of water on the stove top over low heat. Use a thermometer to measure the water temp as it climbs. Not the water temp as you measure the resistance and compare it to the chart below. See YouTube video at the bottom of the page.
Where is the CTS sensor located? On Jeeps there are two coolant sensors. There is one at the front of the engine in the thermostat housing, this one has two wires. Then there is another at the back drivers topside of the engine cylinder head just to the right of the valve cover, this one has one wire.
How much is a coolant sensor for a Jeep Cherokee?
The best part is, our Jeep Cherokee Coolant Temperature Sensor products start from as little as $11.99. When it comes to your Jeep Cherokee, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Coolant Temperature Sensor product and part brands so you can shop with complete confidence.
Where is the temp sensor on a jeep?
The one wire sensor in the back sends temp readings to the gauge in the Jeeps dash. If you temp gauge isn’t acting right, replace the one wire. The two wire sensor located in the thermostat housing sends its signal to the PCM. For poor performance issues and testing we are going to look at the two wire up front.
What causes a jeep coolant sensor to fail?
Wear and tear from age. Old coolant that has become corrosive. Leaking around where it screws in or where the electrical connections. Cracks in the plastic where the harness connects on to it. It’s really not a sensor that fails often. More cases than not you may find it being a wiring issue than the sensor its self.
To properly test the coolant sensor, you’ll need a multimeter that can test for resistance, most do. Attach one lead of your tester to the black wire, and the other lead to ground. Remove the coolant sensor from the reservoir tank.
How does the coolant sensor work on a jeep wranger?
Coolant temperature sensor test and change for the Jeep Wranger. Coolant Temperature Sensor monitors the temperature of the water in the engine. The PCM uses this temperature reading to adjust the fuel injection and timing. In some cases the PCM uses the reading from the sensor to turn on the electric cooling fan if so equipped.
How to test your Cherokee coolant sensor and wiring?
To properly test the coolant sensor, you’ll need a multimeter that can test for resistance, most do. Attach one lead of your tester to the black wire, and the other lead to ground. Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero.