Q: Electric radator fan won't kick on at all

asked by on

I did a motor replacement I have the entire working harness plugged in but my electric radiator fan won't kick on and my truck runs hot it will not even kick on when I turn the AC on high what could the problem be?

My car has 142000 miles.
My car has an automatic transmission.

Hello. The radiator fan should work in low or high speeds. The speeds are controlled by two relays in the totally integrated power module on left front fender. There should be a 60 amp fuse in position J13 to power the relays. The relays are turned on and off by the totally integrated power module. This module is told by the electronic control module to turn turn on and off the fans through the computer network. The most common problem is the totally integrated power module not working correctly. The system will need tested and scanned to activate the fans through the computer to see if this is a sensor issue or totally integrated power module issue. Have a mechanic use a diagnostic scan tool to attempt to activate and test the fan for you. A certified mobile mechanic from YourMechanic can come to your home or workplace to test why the fan isn’t working.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Electric radator fan won't kick on at all

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Miss firing cutting out rough idling poor acceleration and dies on me

Engine misfires can be caused by many different problems, but there are a few suspects that occur more than others. Generally, misfires are caused by either a spark or fuel issue or in cases, a combination of both. Spark related...

Q: Car car is leaking gas. Engine light stays on and now says check fuel inlet. How much and how long will this take to fix

Leaking gasoline is a fire/explosion hazard so be sure to have this leak repaired at your earliest convenience. In the meantime, be sure not to park in a confined space, such as a garage, because gasoline vapors could accumulate and...

Q: Truck starting and shutting off

Hi. It sounds like the key for the new ignition doesn't have the right chip. Modern keys have a transmitter that sends a signal to the vehicles computer telling it that it's the correct key. Try starting your vehicle with...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.