'07 HHR the engine temp gauge only works some of the time when not workng still have heat but no a/c

80

Asked by Apr 17, 2010 at 03:37 PM about the 2007 Chevrolet HHR

Question type: Maintenance & Repair

'07 HHR the engine temp gauge only works some of the time - when not working the heater still works but not the A/C. If the engine temp gauge is working the A/C works. The engine light stays on for no apparent reason and the left rear passenger door lock no longer works with the rest of the door locks.

13 Answers

80

It was a damaged thermostat that was causing the engine light to come on and the temp gauge to not work. The rubber on the thermostat was all shot to hell, stretched out, torn and missing some pieces. After I replaced it the, temp gauge started working again and the engine light went out after I had driven about 24 miles.

8 of 8 people found this helpful.
320

I just bought my 2007 HHR 3 weeks ago and yesterday I noticed the exact same problem. When the temp gauge didn't work the a/c didn't work either and the engine light came on and has stayed on since. About every 3rd trip the A/C and temp gauge will work. You mentioned that you replaced the thermostat and it fixed the temp gauge problem but what about the a/c? Thanks.

32 of 32 people found this helpful.
110

have had same problem with my 07 for months. codes read bad sensor&therm. replaced sensor &was told therm probably not bad because it worked ocasionally. going to buy therm now.

7 of 7 people found this helpful.
10

My oil presser gage stops working also,

1 of 1 people found this helpful.
110

never had problem with oil gauge, but replaced thermostat on 12-16 & after start&stop 3or4 times, everything was back to normal. therm rubber was all distorted also. a/c works fine & ck engine lite went out.

4 of 4 people found this helpful.
4,745

you need to change the sensors and for aic check the air filter. http://chevrolethhr.net/

2 of 2 people found this helpful.
155

needs new thermostat

1 of 1 people found this helpful.
455

This is an easy fix. Just did it myself in my driveway. It will take you longer to remove and re-install the lower radiator hose than it will to replace the thermostat. My advice would be to go to Autozone and spend $37.00 on an OEM hose clamp tool, and make sure you have an extra long extension for your ratchet, and of course, a 10 mm socket. The thermostat housing itself does not require a gasket, the thermostat itself has an o-ring on it, so don't buy an extra gasket, it already comes installed on the new thermostat(22.99 at Autozone). I was shocked at how quick this was to do! Save your hard earned cash and do it yourself!!

3 of 3 people found this helpful.
60

After replacing the thermostat did it also fix the AC problem?

6 of 6 people found this helpful.
155

it fix the problem but it set me back 275.00 to replace the thermostat

20

I found out it is my thermostat I need to replace where can I find a cheaper part then at the dealership

2 of 2 people found this helpful.
70

I have a similar problem with an as yet undiscovered cause - As some of you state - both the temp gauge and the AC become inoperative at the same time - The code displayed on my code reader indicated no temperature sensor input - I foolishly replaced the sender and it accomplished nothing - going back with the code reader again when the light came back on and the gauge and AC again inop there was an engine temperature displayed on the reader so I knew the sender works - a rest immediately restarts the gauge and the AC. Whats odd is that the gauge and AC may fail but no light and no code - But even with no code pushing the clear codes button on the code reader gets it all back up and working - sometimes for a day / maybe a week / could be a month. So I am thinking cluster ?? - BCM ?? - who knows but the code is incorrect

7 of 7 people found this helpful.

For those whom wonder if by replacing the thermostat will fix the ac not working, the answer is yes it will., ac will stop working as a safety future, when the temp sensor reads high temperature or it gets disconected or in the case of a bad thermostat, the car will stop the ac from engaging the clutch, after you replace the thermostat or the temp sensor you must clear the codes and the ac will be back in business

Your Answer

HHR

Looking for a Used HHR in your area?

CarGurus has 2,469 nationwide HHR listings starting at $990.

ZIP:

Chevrolet HHR Experts

  • #1
    Tom Demyan
    Reputation
    950
  • #2
    Js08016
    Reputation
    540
  • #3
    butch686
    Reputation
    500
View All

Related Models For Sale

Used Chrysler PT Cruiser
13 Great Deals out of 2,905 listings starting at $990
Used Chevrolet Equinox
968 Great Deals out of 70,290 listings starting at $2,200
Used Chevrolet SSR
10 Great Deals out of 278 listings starting at $13,450
Used Chevrolet Malibu
1,070 Great Deals out of 72,017 listings starting at $1,896
Used Chevrolet Impala
479 Great Deals out of 33,615 listings starting at $777
Used Chevrolet Colorado
247 Great Deals out of 30,985 listings starting at $2,495
Used Chevrolet Cobalt
45 Great Deals out of 3,581 listings starting at $1,500
Used Ford Focus
740 Great Deals out of 52,632 listings starting at $1,000
Used Ford F-150
2,245 Great Deals out of 179,996 listings starting at $1,300
Used Chevrolet Corvette
289 Great Deals out of 20,736 listings starting at $2,990
Used Ford Mustang
712 Great Deals out of 38,399 listings starting at $895
Used Honda CR-V
787 Great Deals out of 53,406 listings starting at $1,750
Used Toyota Camry
1,042 Great Deals out of 68,980 listings starting at $295

Used Cars For Sale

2011 Chevrolet HHR For Sale
10 Great Deals out of 440 listings starting at $2,000
2010 Chevrolet HHR For Sale
14 Great Deals out of 371 listings starting at $990
2009 Chevrolet HHR For Sale
10 Great Deals out of 401 listings starting at $2,297
2008 Chevrolet HHR For Sale
7 Great Deals out of 459 listings starting at $1,750
2007 Chevrolet HHR For Sale
6 Great Deals out of 405 listings starting at $1,489

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.