Q: my temperature gauge rises slowly when its in drive and idle. once i start driving, it quickly drops. what could be the issue?

asked by on

When i start my car waiting for it to warm up everything is fine. About 5min into my drive my temperature gauge rises when i am stopped on the street for long periods. Once i drive off the gauge immediately drops to operating temperatures. My heat runs warm turned up. And a good portion of coolant from my radiator fills my reserve tank from between L and F to Full
My car has an automatic transmission.

Hi there. From the description you have provided, this could be an inoperative radiator cooling fan issue. Turning on the a/c, this should turn the radiator cooling fan(s) on, which would help identify whether the cooling fan(s) are capable of turning on. If, the fan(s) turn on, then it could be a faulty coolant temperature fan switch. If, the radiator cooling fan(s) don’t come on with the a/c on, it could be, a blown radiator cooling fan fuse. It could be, a faulty radiator cooling fan relay. It could be, a faulty radiator cooling fan motor. I recommend having your vehicle’s temperature gauge be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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. my temperature gauge rises slowly when its in drive and idle. once i start driving, it quickly drops. what could be the issue?

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: Faint buzzing sound when car is moving

Hi Shaunacee. Thanks for sending in your question to us tonight. One thing I would check first is whether or not the sound stops or starts when your AC is turned on or off. If the noise is coming from...

Q: I put it into reverse then drive but won't go. in neutral it tried to back up, the gears lock even D in it just won't go forward

If the transmission was so low on fluid that it wouldn't operate in reverse, it could be that there is extensive internal damage. At 169 000 miles it's about time. But don't panic yet. There are a couple of things...

Q: The engine started making noises and shakes

It depends, it could be something as simple as carbon deposits in the throttle body disrupting cold start airflow to low/unbalanced engine compression on a cold start. Because the engine is well-maintained, the first thing to do is to have...

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...
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...
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...