Skip the auto shop - Our mechanics make house calls

Q: Running warmer then what it should be

asked by on

Running warmer then it should be. No leaks, the cove said it was was not opening it soon enough

My car has 1139000 miles.
My car has an automatic transmission.

If you have a code that says the thermostat is opening to late, I would just replace the thermostat. Codes indicating thermostat problems are usually accurate. I would only recommend being sure the cooling system is completely full before you begin replacing the thermostat. You indicate there aren’t any leaks, so it is likely to be full, but it is possible to loose coolant slow enough that you won’t notice any leaks.

Checking the cooling system should be done when the motor is cold. Checking the coolant level on a hot vehicle is very dangerous. So remove the radiator cap, not just the coolant overflow tank cap. The most accurate way to see if the coolant is full is by removing the radiator cap first thing in the morning. If you do find the coolant is low, still replace the thermostat. Thermostats are known to fail as a result of other cooling system issues.

Some other possibilities are a plugged radiator, inside it and outside. I wouldn’t expect a plugged radiator if the coolant is clean, but it would be highly suspect if the coolant is in poor condition. Also, the exterior fins of the radiator can become clogged as well. But I wouldn’t expect either of these to be the main issue with the code that has been set. Although, these two points of clogging are very common sources of a car running warmer than normal, but without the thermostat code.

If you decide to get this fixed, consider YourMechanic, as a certified technician can 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

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: Issue is between 3rd and 4th gear during driving.

Hi there. Ford Fusion's are notorious for having transmission issues. In most cases, the problem you are describing has been determined to be caused by an internal hydraulic failure or obstruction. In some cases, it's due to debris inside the...

Q: My heater seems to blow hotter when I'm driving versus when it's sitting at idle or at a stop light. Also the heater takes too long to heat up the cabin department. Why?

Hi there. When your vehicle is in motion and driving down the road, then engine coolant temperature tends to get hotter on the engine before it gets to the radiator, so the heater will naturally heat up more when driving...

Q: Charging and starting - 2008 Chrysler Sebring

Code P0622 relates to the alternator not working properly. This code can sometimes come up when the battery is weak. I would recommend testing the battery first and if it checks out OK, then the problem is likely the alternator....

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...
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.