My friend's 1999 Grand Prix GTP, 3.8 L Series 2, Supercharged, has a hessitation problem at around 3500 RMP. There is no codes, engine just "jerks", or cuts out when you bring it to 3500 RPM, it will not go into higher than 3500 RPM.
There is no codes and car has about 11500 km.
He has changed coils and spark wires, no fix.
I am preaty sure someone has seen this and has a solution.
Ziggie
1999 Grand Prix jerks and cuts out at 3500 RPM
Re: 1999 Grand Prix jerks and cuts out at 3500 RPM
Does this happen only when driving under load, or will it do it in park or neutral.
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