temp gauge is all the way up

1998 PONTIAC GRAND PRIX

229,000 MILES

NV_2087

MEMBER
2 POSTS

I have a 1998 pontiac grand prix 3.8 my coolant fan does not work but it does work with the ac I already changed two out of the 3 relays and got nothing so I changed the coolant temp sensor and my temp gauge is all the way up way way up and I know my car

Coolant fan not working and changed coolant temp sensor and my gauge is all the way up even tho my car is cold and won't go back down,

Jan 12, 2012 at 1:04 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

If you unplug the sensor will the gauge drop all the way down?Any codes in the computer?

Jan 12, 2012 at 1:09 AM

NV_2087

MEMBER
2 POSTS

i think it might have been a defective ECTS because i bought another one at a different merchant and now it reads at it should but my fan is still not working

Jan 12, 2012 at 12:24 PM

HOMER1967

✓ASE Certified Mechanic
875 POSTS

there is a seperate sensor for the fan operation.

Jan 13, 2012 at 2:17 AM

NV_2087

MEMBER
2 POSTS

Where is it ?

Jan 13, 2012 at 3:36 AM

AAWESOME XANDER

MEMBER
1 POST

I am having the same problem with my 98 grand prix.

Feb 7, 2012 at 6:29 PM

PHILLIPALANHILLIS

MEMBER
1 POST

I had that same problem and just drove it it fixed its self

Feb 3, 2013 at 5:23 AM

HOMER1967

✓ASE Certified Mechanic
875 POSTS

it is right below the throttle body on your vehicle.

Feb 3, 2013 at 1:24 PM

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