PontiacBonnevilleClub.com

I have a 1996 bonneville se with a 3.8. I have already taken out the MAF and cleaned it but that still hasnt worked. Also just replaced with a new alternator. Slight belt squeekage but after a while the rough idle will quit and runs fine.

When was the last time it had new plugs and wires? It smoothing out after a bit might be a clue to something, but I can't remember exactly what.

I'd say plugs, wires, and possibly check for a bad coil.

i just changed the plugs and plug wires probably about 2 months ago

Have you checked and cleaned the IAC motor and its bore in the TB? It's the round plastic thing on the top of the TB that goes in sideways.

i just got the code number its p0102 MAF or VAF circuit low imput

double check and make sure the connectors is fully seated. If that doesn't work inspect the wires, connectors, and pins real good and make sure there aren't any cracks, corrosion, or chaffing. And if that doesn't fix the problem get a multimeter and/or test light check if there is or how much output is coming out of the connectors.

Take out the MAF, and carefully clean the elements with rubbing alchohol on a q-tip.

Does the rough idle stop when the MAF is unplugged?

I've taken out the MAF and used some MAF cleaner on it. It was pretty dirty. And i have not yet tried to unplug it to see how it runs without it

When it's doing its rough idle, unplug the MAF sensor and see how it changes.