Temp. Gauge and A/C

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Jul 4, 2018 | 09:05 AM

tileman2692

Thread Starter

Joined: 07-04-2018

Posts: 9

From: Cape Coral , fl

Temp. Gauge and A/C

Hello, newbie here , my name is Tillman AKA Frank. I have a 2008 HHR and have a prob. Tha A/C works fine and all of a sudden the temp. Gauge shuts down.....0... and the A/C shuts off until the temp gauge is working again. Sometimes for a few MLS and then sometimes for days at a time. Would this be a replacement of the sensor or the themastat.

Last edited by tileman2692; Jul 4, 2018 at 09:39 AM.

Jul 4, 2018 | 09:19 AM

Greybeard999

Senior Member

Joined: 03-06-2010

Posts: 6,869

From: Ohio

Thermostat... very rare that the sensor is the problem. I would suspect sensor wiring before the actual unit itself. Those symptoms are actually showing you that the sensor reported a fault to the ECU.

Make sure you use the proper AC-Delco thermostat or the same thing is going to happen.

Jul 4, 2018 | 09:21 AM

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,480

From: Fredericksburg,VA

t-stat first. AC/Delco 131-158 ONLY

If that doesn't fix it get a sensor.

BTW, the life time of DexCool is 5yr or 100,000 miles, whichever comes first; most likely you are due.

Jul 4, 2018 | 09:38 AM

tileman2692

Thread Starter

Joined: 07-04-2018

Posts: 9

From: Cape Coral , fl

Thank you so much, leaving for S.C. ( with different vehicle) so won't get to replace it till I get back on the 16th. Will get back for my reply

Jul 19, 2018 | 01:42 PM

tileman2692

Thread Starter

Joined: 07-04-2018

Posts: 9

From: Cape Coral , fl

What a *****....got it in and no change engine light comes up, .......flat line and no a/c. Where is the sensor

Jul 19, 2018 | 02:01 PM

RJ_RS_SS_350

Moderator

Joined: 05-01-2014

Posts: 8,509

From: California

#706 in this diagram, right near the thermostat. What thermostat did you use? What is the code for the Check Engine Light(CEL)? Did you change the coolant?