Q: Temperature goes into the red zone during slow driving or idling

asked by on

Hello. The temperature gauge in my car is not working correctly. It goes into the red zone. It happened when I had the water pump and timing belt replaced. After installing new parts, on my way home, the gauge stopped working normally. I took it to the dealership again and they said the issue is with the air pockets in the system so I got the system bled. It didn't help however. During idling or slow driving, the temperature gauge goes into the red zone. But, it works better while the AC is running. Do you have any suggestions how to fix this? Thanks.

Hi there. If this occurred right after the work was performed then it is possible that there is air still stuck in the cooling system, but from what you are explaining with the AC, it sounds more like a cooling fan problem. If the radiator cooling fan is not coming on then that will cause this. It may be a bad fuse or relay. I typically start by making sure that the ranks coming on when the engine warms up. If not I would diagnose it from there.

If you need to have your temperature gauge issue diagnosed, consider YourMechanic, as a certified mechanic can come to your home or office to take a look at it.

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. Temperature goes into the red zone during slow driving or 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: Just changed a blown water pump and now the truck chugs when driving and idling on my 2003 Dodge Dakota

Hello. Typically I would need to know if the engine overheated when the water pump failed. If it did then that may have caused damage to the engine. At that point I would do a compression test and a block...

Q: Air flow going up and down when gauges go up and down

The electrical system on these vehicles are known to have an issue with fretting corrosion buildup in multiple electrical connectors throughout the vehicle. An affected system would need to have that electrical connection disconnected, cleaned, and a dielectric compound put...

Q: Coolant leak needs fixing

Hi there, could you be more specific about the coolant leaking onto the ground creating a puddle or if you notice the coolant levels are low? If you notice puddles, it is most likely one of the seals for the...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.