I have a 3.1 liter Grand Prix and it says low oil and after that all the light lit up and it tried to shut down on me, what's going on?

Asked by Apr 08, 2014 at 01:28 PM about the 2002 Pontiac Grand Prix SE

Question type: Maintenance & Repair

5 Answers

4,575

The low oil light comes on before anything else when the car is about to stall. All the other lights come on with the key on + engine stalled. You'll need to get the OBD code to trace what's going on. Get the car to PepBoys or Autozone, they will read the code for free. Take it from there - either find a mechanic or post the code here and maybe someone can point you in the right direction.

It doesn't have a check engine light on an isn't throwing any codes however it stalls and will not start most of the time unless I pump the gas. I unhooked a lot of the sensors just to see if it would throw a code for kicks and the light never lit up. Also the security light is on while its running which is also new.

4,575

If you got no codes with the sensors disconnected, it's possible that the ECM is bad. But before going that route, check the following: ISC - Idle speed control system (check for gummed up idle valve), low fuel pressure, vacuum leak (especially EGR). These can cause intermittent stalling or rough idle along with hard starting, but the engine will run fine at speed. You will need a special scan tool to run a proper idle speed control test, one that sends the vehicle-specific command to increase idle speed. If you don't have this, try turning on the A/C to the maximum setting, with the car idling. If you don't get an increase in RPM, the ICS is bad.

Okay, now I had replaced the original motor with a different 3.1 out of an 02 Buick century. Are the ECM's different?

4,575

Yes, there are variations in the ECM, mostly for the different vehicle weights and different trannys these popular engines were mated to. If the ECM is the one that came with the engine, you should be okay. It might affect performance or gas mileage, but I don't think it would affect the idle. If you kept the car's original ECM and hooked it to the new engines sensors, however, that could sure be a source of miscommunication.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,871 nationwide Grand Prix listings starting at $900.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,160
#2 Tom Demyan
Tom Demyan
Reputation 2,830
#3 munron
munron
Reputation 2,180
View All

Related Models For Sale

Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Pontiac Bonneville
3 Great Deals out of 533 listings starting at $1,799
Used Pontiac Grand Am
1,215 listings starting at $1,999
Used Chevrolet Monte Carlo
21 Great Deals out of 1,408 listings starting at $1,995
Used Ford Mustang
470 Great Deals out of 45,735 listings starting at $1,999
Used Chevrolet Malibu
950 Great Deals out of 79,668 listings starting at $1,500
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Ford Taurus
249 Great Deals out of 20,434 listings starting at $699
Used Honda Accord
812 Great Deals out of 84,287 listings starting at $1,050

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
18 Great Deals out of 429 listings starting at $1,500
2007 Pontiac Grand Prix For Sale
4 Great Deals out of 392 listings starting at $2,500
2006 Pontiac Grand Prix For Sale
456 listings starting at $2,675
2005 Pontiac Grand Prix For Sale
5 Great Deals out of 351 listings starting at $1,895

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.