Skip the auto shop - Our mechanics make house calls

Q: Replaced thermostat still reading higher than normal

asked by on

My vehicle began to overheat. I changed the thermostat and deal and it is still heating up more than normal. I don't see any leaks. What is weird is when I got my brakes the temp goes up but when I step back on the gas it drastically drops..... what is going on
My car has an automatic transmission.

A: The problem is most likely a bad cooling fa...

The problem is most likely a bad cooling fan clutch which is not turning fast enough at idle. When you also rev the engine it increases the fan and water pump. Check to see if the fan clutch passes the "tissue" test. This is done by placing a tissue in front of the center of the A/C condenser while someone is holding the engine at about 1200 rpm. Put the tissue on the condenser with the fan to see if the tissue holds in place. Then let the engine idle and the tissue should not fall. If it does, replace the fan clutch. Be sure to stay clear of any moving parts or fans.

If you need some assistance with this, consider YourMechanic, as a certified technician can come perform these checks to diagnose your overheating issue and make the necessary repairs. Good luck.

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: what is the function of this LOCK PLATE , COLLAR NUT, BEARING RACE, SHIM X, output FLANGE?

The output flange is to connect the driveshaft or axle depending on the type of rear end you have. The lock plate holds in the bearing using a shim to pre-load the bearing into the race. The collar nut holds...

Q: AC problem on a '97 Isuzu Rodeo

That thing is almost 20 years old. It's 19 years old and it probably just needs refrigerant. You'll need to evacuate all the old refrigerant out, so you've got to have a recycling machine. Then you would put a factory...

Q: Still over heating after replacing radiator and thermostat. What is next plan of attack

Firstly, I would recommend checking the water pump for leaks and testing it to make sure it is flowing correctly. Also, as a means to eliminate another possible problem, while you are at it, I would check the coolant fan...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.