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2005 Chevy Impala Temperature Gauge Issue?
My car's temp gauge has been, I think, giving me false reads. This morning, before I turned the car on, I noticed that the gauge showed the temp at almost 260 degrees. I checked my radiator and it had coolant in it. I checked my coolant tank, and it was a little low, so I topped it off. However, when I topped it off, I heard splashing on the ground and saw directly under the tank was wet and it looked like coolant. I drove to work, which is 20 miles via highway, and I never saw my hood smoking. The temp gauge, however, showed WAY past the 260 degrees mark. Still, there wasn't any smoke coming from the engine, and I felt the hood when I got to work and everything was still cool. So I don't know if it's the thermostat going bad, or if I have a bad gauge, or if I'm losing pressure because of the sound I heard when pouring in my coolant. Any help would be appreciated. Thank you.
4 Answers
- JohnLv 68 years agoFavorite Answer
Change sensor, bleed our out and always check at radiator when cold. If there is a leak in the system it may not recover coolant from jug, same as bad cap.
- auto mLv 58 years ago
You may have it scan for DTC it will give you a more accurate idea what's going on If your cooling system is not the problem the top radiator hose will be under pressure and hot to the touch with your full hand the air will come out hot from you vent inside the car setting to full hot
If you want to try to disconnect the temperature sensor it should be close to your thermostat see if your gauge goes to full cold still having engine off for all these test
Source(s): Me - Jim AlzaelLv 68 years ago
Check the wiring going to your temperature sending unit, which in most cases would be hooked to your radiator. The tank is just an overflow tank which catches the overflow when you turn off your car and sucks it back in when you start it up... you CAN overfill it... but check the hoses from the tank to the radiator to be sure... also make SURE the radiator cap is good and holds pressure. There would be a rubber seal to inspect.
- 7 years ago
I hope by now you have found the answer. Impalas are horrible about the stepper motors going bad in the gauge cluster. You can find several people online that can reasonably fix it for you. Gm used weak motors in their clusters for several years
