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Coolant temperature gauge is not working

Tiny
CHADANDJANICE
  • MEMBER
  • 2006 CHEVROLET COBALT
  • 80,000 MILES
I changed the coolant temp sensor on my 2006 chevy cobalt ss but the temp is still not reading on the instrument panel. I went to auto zone they hooked it up to the computer and it said the temp sensor was not reading correctly so I bought a new one but the temp is still not reading all the time. When its cold cooling temp wont read but as the day progresses the car will start reading them coolant temp
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Wednesday, November 2nd, 2011 AT 12:16 AM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
As usual, a free code read never identifies a bad part, just a failed system. Autozone is in the business to sell parts, not repair cars.

You need a real shop with a real tech to properly diag the code and pinpoint your failure and give you a bid.

What was the code number?

Roy
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Wednesday, November 2nd, 2011 AT 12:27 AM
Tiny
CHADANDJANICE
  • MEMBER
  • 3 POSTS
I dont know the code but its odd that the coolant rempt shows up as the day heats up but in the morning when its cool it dosent work? I figured I had to take to a dealer but I know its going to cost a lot
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Wednesday, November 2nd, 2011 AT 1:26 AM
Tiny
ASEMASTER6371
  • MECHANIC
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You dont need a dealer. Find a good repair shop that has a scan tool and they can monitor the readings cold and hot to see where the issue lies. You will have to spend money for the diag but it beats throwing parts at it that dont repair the car.
I still think it may be thermostat related.

Roy
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Wednesday, November 2nd, 2011 AT 1:33 AM
Tiny
CHADANDJANICE
  • MEMBER
  • 3 POSTS
Thank you I was thinking the thermostat may be not be working correctly and thats a simple fix so I will try that next and get back with the results
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Wednesday, November 2nd, 2011 AT 1:57 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good luck

Roy
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Wednesday, November 2nd, 2011 AT 1:59 AM
Tiny
MONGO420
  • MEMBER
  • 0 POST
I had to put anew thermostat in my SS. It was doing the same thing, would never really warm up. Turns out it was stuck open, works perfect now.
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+1
Thursday, June 13th, 2019 AT 7:29 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good deal.

Roy
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Thursday, June 13th, 2019 AT 11:16 PM

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