02 grand prix MAF problem has me stumped

10

Asked by Feb 19, 2017 at 09:32 AM about the 2002 Pontiac Grand Prix SE

Question type: Maintenance & Repair

Driving car and it dies. Maf sensor is the code. Change it, reset code, and drive
it 2 miles and it dies. Won't start until I clear code. Then I drive for a couple
miles and it dies again, repeat..... What am I missing.

4 Answers

50,765

http://easyautodiagnostics.com/gm/3.8L/maf-sensor-diagnostic- tests-1

1 of 1 people found this helpful.
69,445

What trouble code do you have? -Jim

10

P0101

2 of 2 people found this helpful.
69,445

P0101 could be the MAF circuit. In other words the wiring going to the sensor. Also, if you bought a rebuilt sensor it may be defective. A new one can be too, but it's less likely. Do you have one of those cold air intake set ups on your Grand Prix? The oil used on the air filter will contaminate the MAF. Check the hose going from the air filter box to the MAF. If it's split or otherwise damaged it can skew the MAF signal. Check for any vacuum leaks. If you have the 3.8 engine the intake manifold gaskets are suspect. Especially if you're between 90,000 and 120,000 miles. Check that the MAP sensor hasn't lost vacuum. Or is leaking vacuum. Rarely a clogged catalytic converter can cause the P101 along with the symptoms you describe. So check that as a last resort. HTH. -Jim

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