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About Todd Puccio
Expertise
General auto repair,electical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm spacific. I have worked at my current dealseship since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way.

Experience
Experience in the area:I have been employed by the same Gm dealer for 18 years and and a ASE master technician. I work at a Pontiac and GMC truck store. Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franschise was purchased by this dealership. Organazations: ASE master techncian Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied scineces (auto technology)Awards and Honors: GMC master techncian

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Pontiac Repair - Pontiac Firebird 1990 Engine/Automatic Transmission

Expert: Todd Puccio - 11/6/2009

Question
G´day

I have got a Pontiac Firebird (1990) with a automatic transmission and v6 3,1 engine.
My problem: when i engage the "D" gear then suddenly the rpm of the engine lowers up to 500rpm/min. After a few seconds the engine brakes down.
Have you got any idea what the problem might be?

Sorry my english is not perfect..:-)

greetings from germany...
Kevin Baierl

Answer
Hi kevin:

How does the car run when cold? does it have the normal fast idle and then slowly idle down as the engine warms up? My first though would be a dirty throttle plate and or idle control motor. I would clean the throttle body and plate and idle control motor. Then diconnect the battery let it sit for a few minutes reconnect the battery. turn the engine to the run position but do not start it let it saty on for 30 seconds. turn the key off for a minute and do the same steps again. Then start the car and let it idle ad see if that fixes it. Good luck :)

P.S. Your english is better then mine!

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