Hi. Would anyone know the cause of this issue? My GTA has been randomly stuttering when I press the gas and hesitating. There are no check engine codes. This problem happens for a few minutes and then just suddenly goes away. It started out happening like once a week for a few weeks and now it happens like every day. What could it be? Maybe a bad fuel pump? If the fuel pump were going bad, would it randomly drop the pressure? I haven't checked the fuel pressure or anything, just going on someone else's suggestion.

The last time it was acting up, yesterday, I unplugged the MAF sensor. Then it acted worse making popping noises. A month ago or so the MAF sensor connector came undone and got chewed up by the fan. I put on a new connector a few weeks ago. After that the check engine light came on with Code 36, MAF burnoff circuit. That code is cleared now and hasn't come back. Two weeks ago the car got new plugs & wires. Not that long ago it got a new msd distributor, distributor cap and ignition module.
Any advice will be helpfull.

Thanks.
-Crystal

 

I have had a similar problem and found a loose connection at the ignition module (inside the cap). The car would fall on its face at highway speeds and only on warm to hot summer days.

I also had a car that was hard to start (had to press the gas pedal) and I just recently replaced the fuel pump after it died completely - and that problem was gone. Before it died it studdered from an idle.

 

Maybe my issue is the fuel pump too. Although I have had no problems with stalling or not starting.

 

If there are not problems with stalling or starting - check the Ignition module then. It is not that much money.

 

Check the ground connections also.