2000 Pontiac Bonneville Repair Question
Topics covered: Black smoke, Fuel pressure, Gas.
Mileage: 174,000 miles.
Mileage: 174,000 miles.
Asked on April 9, 2011
3.8 supercharged
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
Answer
Replied on July 8, 2011
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