Q: Failing fan clutch symptoms

asked by on

Conditions: Ambient temp- 50°F +/- 5° A/C- off Heat- off

I notice that when I start the engine dead cold, the fan spins very aggressivly then almost stops (visibly) after approximately 15 seconds. RPM runs high and then settles in that same time frame. Sometimes, when at operating temperature and I come to a stop, upon acceleration I can hear the fan run very fast and then quite down within seconds. Vehicle is new to me and am not sure of normal operation of fan clutch. Does this sound like normal operation?

My car has 130000 miles.
My car has an automatic transmission.

What you described is happening is normal cooling fan clutch operation. When you first start the engine the cooling fan clutch will be in the full engaged position and may take a minute for the internal fluid to move back to no or low fan clutch engagement. This is why it will run fast and then slow down. The fan clutch can and will increase fan speed on demand as the engine temperature goes up and down. This is to keep it from overheating and maintain a constant temperature.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Failing fan clutch symptoms

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: Turns over strong but won't start.

With my experience with 04 Corvettes, the issue is likely the battery. With the amount of electrical components, the issue is simply battery drain. There are so many settings that require memory that the battery will drain just enough to...

Q: P0171 Code comes on, Car is sputtering in the morning.

There are a couple technical bulletins for your car addressing an issue where the injector wires are not connecting to each injector correctly. It's a possible that they are crossed in your case. The other bulletin says to clean the...

Q: My car has a radiator leak and I need to get it to my mechanic

Claimed by Kevin Gainer

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...