Temp gauges flat lined
07-13-2009, 02:47 PM
#21
Join Date: 06-09-2009
Location: wurtsboro, ny
Posts: 7
Analog Temp Gage Flat and engie coolant reading ---F
Hi all
I seem to have a similar problem. This happened 2x's in the last 20000 miles.
Driving along at highway speeds and I look down to check the gages and I fing the analog temp gage (likely running through the computer) falls flat - no reading what-so-ever.
Since it was warm out, I was using the AC. I also noticing it was blowing warm air.
Later that evening, while driving home I noticed the analog temp gage working and the temp read 189F. The AC also worked... hmmm...
What's more interesting is: no service or engine lights.
Sounds like an electrical issue to me? Any ideas? Temp sending unit?
Thanks!
Warren
I seem to have a similar problem. This happened 2x's in the last 20000 miles.
Driving along at highway speeds and I look down to check the gages and I fing the analog temp gage (likely running through the computer) falls flat - no reading what-so-ever.
Since it was warm out, I was using the AC. I also noticing it was blowing warm air.
Later that evening, while driving home I noticed the analog temp gage working and the temp read 189F. The AC also worked... hmmm...
What's more interesting is: no service or engine lights.
Sounds like an electrical issue to me? Any ideas? Temp sending unit?
Thanks!
Warren
07-13-2009, 03:10 PM
#22
Senior Member
Join Date: 04-30-2006
Location: Maryland Heights, MO
Posts: 9,149
Hi all
I seem to have a similar problem. This happened 2x's in the last 20000 miles.
Driving along at highway speeds and I look down to check the gages and I fing the analog temp gage (likely running through the computer) falls flat - no reading what-so-ever.
Since it was warm out, I was using the AC. I also noticing it was blowing warm air.
Later that evening, while driving home I noticed the analog temp gage working and the temp read 189F. The AC also worked... hmmm...
What's more interesting is: no service or engine lights.
Sounds like an electrical issue to me? Any ideas? Temp sending unit?
Thanks!
Warren
I seem to have a similar problem. This happened 2x's in the last 20000 miles.
Driving along at highway speeds and I look down to check the gages and I fing the analog temp gage (likely running through the computer) falls flat - no reading what-so-ever.
Since it was warm out, I was using the AC. I also noticing it was blowing warm air.
Later that evening, while driving home I noticed the analog temp gage working and the temp read 189F. The AC also worked... hmmm...
What's more interesting is: no service or engine lights.
Sounds like an electrical issue to me? Any ideas? Temp sending unit?
Thanks!
Warren
08-19-2015, 05:27 AM
#23
Senior Member
Join Date: 09-03-2006
Location: chicago
Posts: 498
Just ran in to same problem just like to know if there is a thermostat that are made the same as the gm one with out the rubber that cause the problem.. Like any other brand that cost less .. Thanks
08-19-2015, 03:50 PM
#26
Senior Member
Join Date: 09-03-2006
Location: chicago
Posts: 498
Thanks old blue .. I seen go for like 34$ just crazy for a stat.. What is the link for zzp thanksACDelco 12T103D Professional 180 Degrees Engine Coolant Thermostat with Gasket is this the one?
08-22-2015, 06:42 PM
#29
Member
Join Date: 09-08-2008
Location: Tarzana, CA
Posts: 92
Pumpkin head as a shade tree Mechanic no reason on an HHR that you can't change out the thermostat in 30 minutes.
Pick one up at a local supply or dealer and get r done :)
At least that way you are out less than $30.00 buck and you know you have a good T-Stat in there. then if this continues chase down a sensor or bad connection.
Just an FYI I recently had the interior lights start turning on by themselves with all doors closed!!! Checked all the door switches etc, and nada, as someone mentioned previously, open that fuse/relay box under the hood and reseat every dang relay, fuse etc in there. After doing that I had no further problems.
And 90% of them moved! as in they were not fully seated.
Pick one up at a local supply or dealer and get r done :)
At least that way you are out less than $30.00 buck and you know you have a good T-Stat in there. then if this continues chase down a sensor or bad connection.
Just an FYI I recently had the interior lights start turning on by themselves with all doors closed!!! Checked all the door switches etc, and nada, as someone mentioned previously, open that fuse/relay box under the hood and reseat every dang relay, fuse etc in there. After doing that I had no further problems.
And 90% of them moved! as in they were not fully seated.
