Hello,

Own a 2004 Chevrolet Monte Carlo SS that has right at about 120,000 miles on it. Tonight I've noticed that my temp gauge is going crazy. About a couple months ago while I was driving a 2 hour trip the temp gauge was all the way over to the cold reading of the gauge.

I really didn't think much of it and even a week or so ago while sitting idle the temp guage was all the way over to the left and never budged.

Well tonight the temp gauge tries to go back to reset or whatever and is stuck in the middle, while driving to work tonight I find the temp gauge was going almost to red (260) and would not go back.

I didn't notice anyengineissues, so just tobe safe I turned the heater full blast but I didn't noticeany abnormal issues from the regular normal.

What do you guys think?

Thermostat?
Coolant Temp Sensor?
Cluster Panel?

Also while we're at it my fuel gauge doesn't work either on the instrument panel? Easy way to fix?

 

either the sending unit for that guage is going bad or it's low on water....

 

my did the samething we found out it was the cluster panel it was like 200 dollars to fix cause we had to pull out the dash

 

ahhh coolant!!!!! lol just playin with u duane

since its both ur fuel and ur temp i would suspect the cluster

 

I didn't read that you're fuel guage is messed up too... yeah, it's that gauge cluster for sure.

 

But wouldn't that mean the possibility of both sending units going out as well?

 

It's a possibility that both sending units are bad. But I think what the fuel guage is is actually a true fuel guage. It has a "bobber" type thing that sits in the fuel tank, and a voltage regulator hooked to this "bobber". The "bobber" floats no top of the fule, and the farther it falls, the mroe resistance it gives and the lower your fuel guage goes. I don't know if thats a true "sending unit" like hwat is in your Water Temperature sensor. I'd think if both are going bad, i'ts the cluster, although both guages could just be going bad at the sending unit. The chances are much more probable that it is your guage cluster though.