Pontiac Grand Prix

# 1989 Pontiac grand prix 3.1Li rough idle and stalls when you accelerate you replaced wires plugs and a faulty coil still has rough idle but better than before and still stalls on acceleration?

###### Wiki User

###### July 15, 2015 9:05PM

check your mass air flow sensor. Im having the same problem right now with my 1991 Pontiac Grand Prix & i had a mechanic tell me it was my mass air flow sensor.

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