Thread: Supercharger causing misfire?

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!

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

Originally Posted by 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!

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

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.