Skip the auto shop - Our mechanics make house calls

Q: The high temperature cooling fan keeps coming on when the car is in park or driving. The temp rises until I start driving then it decreases.

asked by on

The high temperature cooling fan keeps coming on more than usual when it's in park and while I'm driving. The temperature rises until I start driving and settles back to the half mark. I changed the thermostat, but the fan keeps coming on longer than it should be.

My car has 116534 miles.
My car has an automatic transmission.

This could reflect a circumstance where the radiator has slowly developed a partial blockage over time due to sediment and corrosion. Other possibilities include a defective radiator cap and partially collapsed radiator hose (typically lower). It is possible for a change in engine operating conditions, for instance lean operation and retarded engine timing to cause overheating as well as exhaust restrictions. There are other obvious possibilities to check out such as low tire pressure, and dragging brakes. However, I would first evaluate the radiator. To avoid any unnecessary repairs, I suggest having your car looked at by one of our mobile technicians who can come to your home or office to diagnose your cooling system.

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
  • Home
  • Questions
  • The high temperature cooling fan keeps coming on when the car is in park or driving. The temp rises until I start driving then it decreases.

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: Just had radiator replaced in March but car overheated today. Fluid level fine - what could be happening?

It sounds like there may be a problem with your cooling fan. If it is not working, the car can overheat when stationary. A quick way to check this is to turn on the air conditioning. The cooling fan should...

Q: I have a 2011 Jeep Grand Cherokee with 277,000 miles (mostly highway). My hope is to get 2 more years (90,000 more miles) out of i

Considering the high mileage and the symptoms you are experiencing, it is very possible that you may need a new engine. Engine prices can vary greatly depending on where you live, which vehicle the engine is going into, the time...

Q: Radiator is leaking fluids

Hello. Anytime that a radiator is leaking fluid, it is an issue that should be addressed immediately. Continuing to drive under this condition could cause damage to your head gasket, water pump and thermostat. Your radiator should be replaced as...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.