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?
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. 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: There is no Check Engine Light on but the car is making a lot of noise - it still runs ok

Hello - there are many things in the engine compartment which can cause unsettling noises: accessory belt idler pulley bearing failure, timing chain guide, tensioner or idler wear, valve timing cam actuators, as well as more traditional noises like worn...

Q: Starting problem, engine revs at low RPM in drive - 1999 Chevrolet C3500

It sounds like the Idle Air Control valve is gunked up. It may be possible to clean it, or it might have to be replaced. A YourMechanic professional can help to diagnose the stalling issue and replace the idle air...

Q: Overheating on short trips. 2000 Chevrolet Metro

Hello. There could be a problem with the water pump not pumping the water as efficiently as it should. This is a common problem with these cars. If the thermostat is faulty this could also cause the car to overheat,...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.