Maybe fuel

Asked by Jan 13, 2017 at 08:00 PM about the 2004 Pontiac Grand Prix GT1

Question type: Maintenance & Repair

I had a code read mas airflow sensor so I replaced
it but my car still acts like it looses fuel power and
rpms after 20mph then it drives great I can't seem
to figure this issue out any ideas ?

1 Answer


Try running some fuel injection cleaner threw a few tanks. Other wise you could check the spark plugs & fuel pressure, it should be around 30 lbs. I would need to know the engine size and if it is coil on plug set-up to give you more info.

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