2000 pontiac grand prix 3.8. Service engine soon light came on. Oreilly scan tool said its running too cold. The gauge barely comes up at all bu the heat seems to work fine. I changed the thermostat in case it was sticking open, but light remains on. I tried the key on accelerator thing , no change. headlights are both working. any ideas? Oh and there is no reset button near fuse panel behind glove box.
160

Asked by cpdad93 Dec 04, 2013 at 09:33 PM about the 2000 Pontiac Grand Prix GT Coupe

Question type: Maintenance & Repair

service engine soon light on.  Oreilly scan says its running too cold.  I changed
thermostat in case it was stuck open.  Heat works fine.  Tried the key on 3 pumps of
accelerator to reset, no change.  There is no button to reset in fuse box behind glove box.  
headlights are working.  Service engine soon light stays on.  Oil level is fine and at 60%
life left.

2 Answers
21,215

Michael answered 10 years ago

If the heat is working fine, then chances are it is just a faulty temp sensor.

Mark helpful
160

cpdad93 answered 10 years ago

two days after changing the thermostat, the light went back off. Probably only about ten miles worth of driving. I am going to get it rescanned to see if the code is gone. I am not sure how often it would recycle to clear the code after it was fixed. Oh and the gauge seems to be working properly again.

Mark helpful

Your Answer:

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3 nationwide Grand Prix listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,150
  • #2
    james sparrow
    Reputation
    7,480
  • #3
    Dorian Hendricks
    Reputation
    6,020
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Impala
6 Great Deals out of 129 listings starting at $3,495
Used Pontiac Bonneville
1 listing
Used Pontiac Firebird
18 listings
Used Chevrolet Monte Carlo
7 listings starting at $9,800
Used Pontiac Grand Am
2 listings
Used Chevrolet Corvette
15 Great Deals out of 777 listings starting at $18,999
Used Chevrolet Camaro
15 Great Deals out of 465 listings starting at $11,999
Used Ford Mustang
35 Great Deals out of 1,603 listings starting at $7,999
Used Buick Regal
4 Great Deals out of 20 listings starting at $6,395

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. Content will be removed if CarGurus becomes aware that it violates our policies.