2005 Grand prix GTP Gauge issues

[Linebacker]

Hey so i have a 2005 Grand Prix GTP comp-g and today i noticed that my temp gauge was not working, it just sat at the bottom. This caused my fans to run the whole time... So when i got home i disconnected the battery for 30min and checked and now the temp gauge works BUT instead of the normal gauge sweep when i start the car they just all shake at the bottom than go to their places... any ideas?

[Fivefingerdeathpunch]

I'd try removing the cluster and inspect the connectors and clean them.

If the issue continues, then the cluster might need to be rebuilt or replaced.


At first I thought temp sensor died because only the temp gauge was at zero and fans were on high, but it might be a different issue.

[Linebacker]

so its been a few months now and im leaning towards the temp gauge.. but i want to be sure. So the gauge cluster jumping has stopped but about once a month my temp gauge wont move and the fans will run... if i disconnect the battery for about 30 min it will work for another month... Does this sound like a temp gauge issue? i have a quote from a shop at $200 but want to be sure before i take it there.

I would do the job myself but the winter here is brutal and it would be impossible

[Linebacker]

Alright so ive replaced the engine coolant sensor and it was good for about a week but now same issue has come back... engine coolant temp gauge will drop to 0 and car will go into "limp" mode with engine fans running constantly... plus hard starts ect.. it also throws a soft code for ECT temp.. if I clear the code its fine and everything works normally but it will come back after a few days any ideas?

[WolvesSoulZ]

New sensor doesn't necessarily means you have a good sensor. Replacement units are often bad.