When does the cooling fan come on or off?
I’ve read that the cooling fan will run the whole time when either the A/C is on or the vent control is set to defrost, regardless of whether the engine is cold or hot. In my case, the cooling fan comes on when the engine is cold, even with the HVAC off and it will remain running at full speed when the engine is running, again with the HVAC off.
Why is the engine cooling fan constantly running?
Click to expand… The “loop” is a current sensor. It’s supposed to sense how much charging current the battery is getting. If you bypass that loop, the car gets very confused about how much current is going into the battery. I thought I saw a guide from Chevy about installing 2-way radios into the car.
Why is the cooling fan running on my Chevy Cruze?
Inspect the wire harness of cooling liquid temperature sensor and cooling fan fuse,both of them were fine. 2. Read out the trouble code by GDS,P0113:Intake Air Temperature Circuit High Input. 3. And read out the stream data,it showed the temperature was -40℃ which was inconsistent with actual temperature around.
Why are the fans on my Silverado always running?
1 month later… I have a 2014 5.3 and the fans come on extremely high, the temp gauge drops to 160. When you cut the motor off the fans continue to run on high speed until the timed power cuts off. Took it to the dealer they said it was because mu AC was out which does not make since.
Why are the cooling fans running on my Silverado Sierra?
When this happens my temp gauge will read zero and when I kill the engine the fans stay on. The only way to shut them off is to crank the engine and shut it right back off. I have been through two temp sensors and still have the problem. It does not do it all the time but when it does it will stop and not do it for a while.
Why are my cooling fans running on high?
I have a 2014 Chevy Silverado 1500 5.3l that I am having a issue with the cooling fans running on high occasionally. When this happens my temp gauge will read zero and when I kill the engine the fans stay on. The only way to shut them off is to crank the engine and shut it right back off.
I’ve read that the cooling fan will run the whole time when either the A/C is on or the vent control is set to defrost, regardless of whether the engine is cold or hot. In my case, the cooling fan comes on when the engine is cold, even with the HVAC off and it will remain running at full speed when the engine is running, again with the HVAC off.
Why does the cooling fan come on when the engine is cold?
Every time I go to start the car after it has been sitting for an entire day and the engine is cold, when I turn the key to the “On” position, before the engine is even started, the cooling fan comes on. How is this possible when the engine isn’t even running and the engine is cold. Again, the HVAC is off.
What should the radiator fan be running at?
The fan continues to run at its maxiumum speed, regardless of the engine temperature. I allowed the car to run today from cold to just above 80 deg. C before sutting it off today.
Every time I go to start the car after it has been sitting for an entire day and the engine is cold, when I turn the key to the “On” position, before the engine is even started, the cooling fan comes on. How is this possible when the engine isn’t even running and the engine is cold. Again, the HVAC is off.
Is the fan supposed to be on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F. Click to see full answer. Similarly one may ask, is the fan supposed to be on when AC is on?
Why does my radiator fan run full speed when I start the car?
Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. The AC is OFF. The radiator and condenser are BRAND NEW. This problem existed before and after the radiator was replaced. The fan continues to run at its maxiumum speed, regardless of the engine temperature.
How often should my radiator fan come on and off?
An electric fan SHOULD NOT run all the time. A mechanical fan WILL spin as long as the engine is running, but it will only ‘lock up’ when needed. Furthermore, why does my radiator fan turn on and off?
Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. The AC is OFF. The radiator and condenser are BRAND NEW. This problem existed before and after the radiator was replaced. The fan continues to run at its maxiumum speed, regardless of the engine temperature.
Is the radiator fan Loud on a cold start?
The cooling fan runs loud and fast on a cold start and th… The radiator fan runs very loud and fast and the car is overheating..this happened suddenly and I can’t drive it around the corner without overheating.
What to do when your radiator fan turns on?
You can do this by listening and feeling if the radiator fan turns on when the car starts. If you need to confirm if it’s in working order or not, you should turn on your engine and let your vehicle idle. Turn the air conditioning to the maximum setting – this should spark the cooling fan to immediately come on.
Is the radiator fan in a Mercedes overheating?
Its as if the fan is running full blast like the car thinks its overheating however the engine cannot be overheating as it happens immediately upon startup. I’ve checked the water level and it’s fine no other problems an engine runs fine.
What should I do if my fan is running at full speed?
Another potential solution to your fan problem is to stop acting as a P2P server for the rest of the world’s Windows 10 installations: Search for Check for updates in the Start menu. Under Windows Update choose Advanced options. Under Choose how updates are installed click Choose how updates are delivered.
Why is my Mercedes radiator fan running on high speed?
Please try again later. This is a very common problem with the Mercedes radiator cooling fan running constantly on high speed. The problem in most cases is a bad ecm so in order to fix it the ecm will have to be replaced and programmed to work with your vehicle. Check the mass airflow sensor first.
Why does my car’s cooling fan run all the time?
Cooling fan seems to run all the time even when cold. I’ve only had my car for a month and it only has 900 miles on it. I’ve been noticing lately that when I start the engine cold the cooling fan comes on at high speed right away despite the fact that it’s about 40F out and the car’s been sitting parked all day.
The fan continues to run at its maxiumum speed, regardless of the engine temperature. I allowed the car to run today from cold to just above 80 deg. C before sutting it off today.
What should I do if my fan is running at a constant high speed?
Confirm that there are no leaks at the sensor, that the air-conditioning is operating as expected and that the fan no longer runs at a constant high speed. Finally use the AssistPlus to run a Quick Test and ensure there are no new fault codes.
Why are the cooling fans not working on my car?
1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Average rating from 129,472 customers who received a Vehicle Engine Cooling Inspection. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
What are the symptoms of a bad cooling fan relay?
1. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
What to do if your computer cooling fan won’t run?
Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor. The relay, however, has direct power to one side, the same as a light switch.
Why are my cooling fans running at all times?
3. Cooling fans stay on at all times. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
What are the signs of a bad cooling fan?
Common signs include the engine running hot and cooling fans either not functioning or running all the time. 1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor. The relay, however, has direct power to one side, the same as a light switch.
How often does a car cooling fan stay on?
Cooling fans stay on at all times Average rating from 129,472 customers who received a Vehicle Engine Cooling Inspection. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
Why is my radiator fan running more often?
It’s not uncommon for the radiator fan to run more frequently from time to time. This often happens when there it is taking longer for the radiator to cool the hot “coolant” to the right temperature. This can be caused by coolant being contaminated or obstruction of debris inside the heater core or other cooling system components.
Why does my truck engine fan keep running?
There is no charge for this service, but standard message and data rates may apply. If the fan is running, it’s for a reason most likely. I wouldn’t want to force it to be off, bad things could happen. Do you often run A/C or defrost mode? That cycles my fan on and off at low speeds frequently. j76ny Thanks this.
Why is my laptop fan running all the time?
Clean the laptop fan If your “system cooling policy” has been changed to passive and you have not run large software and the laptop fan constantly running all the time, you may need to clean the laptop fan because the fan and heat sink are dusty and its heat dissipation performance is reduced.
Is it normal for a car cooling fan to run constantly?
Both cooling fans run constantly. The AC is off. Engine cold, start up, and they both run continuously. Key off, and they both stop. Not sure about the different speeds, but I venture to say it is high speed. I suspect this is not normal. However, the AC does work good!
What happens to the fans when the engine gets too hot?
Both fans always work in tandem. The resistor pack inside the fans will burn out and the fans will stop working on low speed but will still work on high speed when the engine gets too warm. The a/c button turns the fans on LOW only, and the fans will still work on high if the engine temperature gets too hot, above 107C actually, or 224F.
Is the cooling fan always on on a Subaru Outback?
Cooling fan is always on, even runs when engine is cold. Our 2011 Subaru Outback 3.6R, which we bought brand new back in Feb ’11 and only has 4k miles, seems to be having issues with the cooling fan. The cooling fan will come on when the engine is cold and it will stay on the entire time the engine is running.