Q: Car runs hot when idling

asked by on

When I am idling in my car, the temperature gauge runs hot, but once I start driving, the gauge goes back down.

Hello! If a vehicle only overheats when sitting, it usually indicates that there is an issue with the radiator fans. It cools back down due to the rushing air that is created by moving, which momentarily acts as a fan for the engine. The fans are designed to kick on when the engine reaches a certain temperature, but they commonly fail due to a bad fan motor, or faulty fan relays. I would directly power the fans to determine if the motors are at fault, or if there is an interruption of the power being delivered to the fans. I suggest having a certified technician, such as one provided by YourMechanic, come out to the location of your vehicle to run an inspection on your overheating condition.

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. Car runs hot when idling

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: Q: Rear differential noise.

Sounds like you need to take it back to the shop where you had it changed. First you want to be sure it has enough of the correct oil. If it turns out it is properly filled, it may be...

Q: Revs low when idle and falls when at traffic lights

Hey there. Even though you've cleaned the idle air control valve, that doesn't guarantee that the valve isn't still sticking or otherwise malfunctioning. You could try very gently tapping on the valve and see if that affects engine speed. The...

Q: Q: RPMs go up and down

Hello. Your car is equipped with a computer-controlled transmission, so a scanner should be connected, the system checked for codes, and the data analyzed. This vehicle doesn't have a dipstick for the transmission, so a special procedure must be followed...

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...
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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...