Supercharger causing misfire?

[mickybaby]

Hi, I have a 2001 gtp grand prix with 112,000 miles on it roughly. About a month ago it started to stumble and hesitate under acceleration. I had gotten a full tune-up 6 months ago, and replaced the mass air flow sensor (with a brand new one). I got the fuel injectors cleaned and the transmission fluid flushed. I thought the stumbling might be from the tranny, but the technician said it is something with the egine, a bad spark plug or something. I do not belive it is the plugs.

My question to you, is this: my car does burn oil and has slight blowby. Could the oil be dripping onto the pulley or manifold of the superchrager and causing it to make the engine misfire?

The car stumbles at points when the supercharger should kick on. Is it maybe a pulley?


I described this the best i could, if i got anything wrong im sorry, im a 20yr old girl from jersey, i don't know much!

thanks you!

 

[BillBoost37]

Most likely the parts put into your car were inferior. Most shops use very cheap and crappy parts. Your car would be happiest if you gave it a set of NGK or Autolite copper core plugs. Maybe a decent set of wires and at the worst...a coil. The problem isn't oil dripping on anything related to the supercharger, because the charger is on top of everything.

You in for fixing it?
Sounds like you probably need valve cover gaskets to stop that leak you are talking about dripping. Is there actually oil smoke coming out of your tail pipes or just the smell you get at stoplights from it burning off the exhaust manifolds?

 

[BlackGS]

Are the plug wires original? If so, start there.

 

[SlowNA06]

check all of your vacuum hosing and make sure it's sealed up nice.

 

[motorking]

Hi, I have a 2001 gtp grand prix with 112,000 miles on it roughly. About a month ago it started to stumble and hesitate under acceleration. I had gotten a full tune-up 6 months ago, and replaced the mass air flow sensor (with a brand new one). I got the fuel injectors cleaned and the transmission fluid flushed. I thought the stumbling might be from the tranny, but the technician said it is something with the egine, a bad spark plug or something. I do not belive it is the plugs.

My question to you, is this: my car does burn oil and has slight blowby. Could the oil be dripping onto the pulley or manifold of the superchrager and causing it to make the engine misfire?

The car stumbles at points when the supercharger should kick on. Is it maybe a pulley?


I described this the best i could, if i got anything wrong im sorry, im a 20yr old girl from jersey, i don't know much!

thanks you!

Hello,
I am the technical manager at Autolite. You should replace your valve cover gaskets (most common cause of oil leaks on these cars) and then install new plug wires and spark plugs. Autolite professional series wires available at advance auto parts are a direct replacement and fit for the stock wires, they are even pre-greased with silicone grease. Use the Autolite XP606 spark plugs for best results. They will run great and last longer than your car. If you need printed instructions on how to do this, let me know and I will email them to you.
Good luck

 

[BOOSTED GP]

you may have just gotten a bad spark plug or maybe they bumped one putting it in. i would also check your TPS and clean your MAS just in case there was something on it when you pulled it out of the box. A bad TPS can cause symptoms similer to trans problems.

 

[jcurrieta]

did you ever fix this issue??? i have same issues?
my car also has new plugs and wires on it... but im not sure if that is the cause of the issue or the aftermath of someone unsuccessfully trying to fix it.

***UPDATE,,, I fixed my issue,,, it was a short,,, previous owner replaced the plugs and wires,,, and a few weeks that's when I bought it,,, then later on the metal on the o2 sensor got hot was shorting out on the rear drivers side plug wire, as they were touching. So I fixed the plug wire and tied them back from each other. thanks for all the help anyhow.