2000 bonneville 3.8 supercharged

2000 PONTIAC BONNEVILLE
174,000 MILES • 6 CYL • FWD • AUTOMATIC
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JESS_DAN
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hi i have a 2000 bonneville ssei supercharged 3.8 my car keeps choking up when i push on the gas pedel and on the highway on cruise at 80kms keep sputtering and get a black smoke from my exaust and sometimes from a cold start it will not idle i have to keep foot on gas pedel and when it does idle it runs rough goes from 1000rpms to 1500rpms can you plzzzzzzz help me
Apr 9, 2011 at 2:24 AM
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ASEMASTER6371
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ok, first i would look at the plugs and wires. it sounds like it is missfiring with the sputtering.
the black smoke could be from the missfire or it could be from a failed fuel pressure regulator sucking raw fuel into the motor.
the bog could be fuel pressure related or a bad supercharger.
all these could be the reason but you need help from a shop that can touch it and feel the issue and give you a bid.

Roy
Jul 8, 2011 at 9:32 PM