Why are my coolant fans not turning on?
If both fans operate then it is time to take a look at the pressure transducer. Don’t let this strange name fool you, it is simply a sensor that relays the amount of pressure in the system to the PCM and the PCM decides when to turn on the fans and or compressor clutch.
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.
How to repair a cooling fan in your car?
Cooling fan. How to repair a cooling fan in your car DIY with Scotty Kilmer. How to inspect and repair a cooling fan that’s not working. There’s many reasons why a cooling fan could stop working, such as a bad sensor, relay, fuse and more. DIY car repair with Scotty Kilmer, an auto mechanic for the last 42 years. 1.
What should I do if my radiator fan is not working?
A blown fuse is no big deal, and changing one does not cost a lot of money. If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan. The fan itself often uses a big fuse of around 50A, while there might also be a separate small fuse to the fan control module.
Why is my a / C fan not running when the AC is turned on?
Many people confuse pressure in the system for the system being full. Volume and pressure are two different properties of a gas, which the refrigerant in your A/C system is a gas when it is allowed to escape to the atmosphere. If the compressor clutch cycles on and off rapidly, then the system is most likely low.
Where is the fan motor on my truck?
So I pulled my fan motor (Located by the passengers foot, under the glove box). To get at all 3 mounting screws I had to remove a side panel which was connected with clips and just pulled off by hand. Removed the motor but left it connected to the truck. It was a nice day so the motor was working. Man that thing is powerful
What does it mean when your car fans keep running?
When the cooling fans are stuck always running then typically it means that the ECU is not detecting the engine coolant temperature (ECT) sensor or something thereabouts. When the ECU doesn’t know the true temperature is just goes into fail-safe mode and keeps the fans running.
Why does my PCM not turn on the fans?
You are looking to see if the PCM sends power to one or both relays to turn on the coolant fans. This should happen as the high side of the system approaches 214 psi. If it exceeds this amount of pressure and the system doesn’t turn on, one of the sensors in the system that the PCM uses to know when to turn the system on and off has failed.
When do the cooling fans go on or off?
It’ll stay in the mid-range even while your engine is burning up. Only when its extremely, extremely hot will it move into the red zone. The cooling fans are a better indicator as to whether the engine is running hot…if they’re ON then you know the engine is at least over 203 °F.