Asked by Oct 15, 2016 at 10:43 PM about the 2000 Pontiac Grand Prix GTP Coupe

Question type: Maintenance & Repair

I just put a new LIM Gasket, Supercharger Gasket,
Throttle body gasket, added new supercharger oil.
Got a new MAF sensor (3rd time in 2 months)
changed the fuel filter.... My car still has issues
and comes up with mass air flow code... What is
wrong with my car?

7 Answers


If you are an aftermarket air filter set up, such as a K&N for example, the oil for the air filter will contaminate the MAF sensor. Exactly what trouble code are you getting? HTH. -Jim


I do not have a custom Air System... But I do have an air filter from Walmart that I was curious about. Also would there be any chance it could be the coil packs? Because the car is at 132k miles.

1 of 1 people found this helpful.

It could be a failing coil pack but that'd trigger a misfire code. Not a mass airflow sensor code. Sounds like there's something going on there. As far as the Walmart air filter you should be ok. I'm assuming they still sell Purolator filters? Just be sure the filter is seated properly in the air filter box. If dust and dirt is sneaking around the filter it'll ruin the mass airflow sensor. What code are you getting (P0XXX) when you scan the computer? HTH. -Jim




Verify that the electrical connection and the wiring going to the mass airflow sensor is good. No damaged wires and a good clean connection at the sensor. Also, make sure there's no air leaks in the air intake system. HTH. -Jim


How would I check that?


Make sure that the air intake hoses from the air filter box to the throttle body are all securely hooked up. Inspect the hoses for damage. If you find a hole or tear you can temporarily repair the break with duct tape until you can get a replacement hose. As for the wiring and connector at the mass airflow sensor unplug it and look at the inside of the plug. There should be no corrosion. Inspect the wires going to the plug. There should be no fraying, bare spots or pinches. If you find anything out of the ordinary the plug (pig tail) should be replaced. HTH. -Jim

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 1,902 nationwide Grand Prix listings starting at $3,000.


Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
371 Great Deals out of 27,339 listings starting at $1,499
Used Pontiac Bonneville
349 listings starting at $2,000
Used Chevrolet Monte Carlo
950 listings starting at $3,786
Used Chevrolet Malibu
605 Great Deals out of 48,235 listings starting at $1,500
Used Pontiac Grand Am
760 listings
Used Ford Mustang
287 Great Deals out of 38,472 listings starting at $1,995
Used Chevrolet Camaro
245 Great Deals out of 30,155 listings starting at $4,980
Used Nissan Maxima
220 Great Deals out of 18,086 listings starting at $1,500
Used Pontiac Firebird
6 Great Deals out of 658 listings starting at $4,999
Used Honda Accord
553 Great Deals out of 91,963 listings starting at $1,495

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
285 listings starting at $3,995
2007 Pontiac Grand Prix For Sale
268 listings starting at $3,800
2006 Pontiac Grand Prix For Sale
331 listings starting at $3,900
2005 Pontiac Grand Prix For Sale
255 listings starting at $3,000

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.