Skip the auto shop - Our mechanics make house calls

Q: Fans not working causing van to overheat

asked by on

The fans in my vehicle fail to come on causing the van to overheat.

A: The fans are controlled via a relay that su...

The fans are controlled via a relay that supplies power from fuse 27 (40A) in the under hood fuse panel. The control side of the cooling fan relay is a switched power signal from the Engine Computer. A voltage check to the cooling fan relay from the engine computer should be carried out as well as a voltage check from the relay to the fans. If you need help from a mechanic, such as one from YourMechanic, who will have the training and equipment to diagnose the electric fans.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I was driving home and came to a stop light and it just stalled and refuse to start.

From what you've described, there may be a piece of carbon lodged in the EGR valve. This can cause a stall and hard start conditions. This accounts for the vehicle having fuel pressure and spark still. Try to see if...

Q: Engine light has come on, fans are coming on when vehicle has only been started for a few minuites and remain on

With the previous work that was done recently, it is very likely the problem is that coolant leak. If its not the leak repair that has failed, it may be an additional leak. Have you checked the level of the...

Q: Oil under car

Oil leaks generally will become worse over time. Locations where leaks commonly develop are at the valve cover, oil pan or camshaft and crankshaft seals. The source of the oil leak will need to be located, and then the leak...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.