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Automotive/Pontiac Grand Prix 3.1 V6 Dies when comes to a stop

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Expert: Sean Halliday - 10/5/2009


Question
Hello there.
I own a 93 pontiac grand prix 3.1 V6 Automatic.
I took the car for a 40 km drive today and i noticed than when i stoped a a traffic light the damn engine idles between 1000 and 500 rpm and eventualy dies.
It would start fine but when it shifts into any gear the rpm falls againg and i have to press the accelerator pedal to keep it running.Kinda difficult with automatic transmission.
Any suggestion would be great!
Thank you!
Kind regards
The problem occured after 20 minutes of driving

Answer
EGR failure is one option.A blocked egr or plugs,more options are,wires,ignition,fuel flow,air leak at the vacuum system.Maf sensor.Fuel filter blocked.You will need to go over all relevant procedures to test each component.A haynes or chiltons will be needed.

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Sean Halliday

Expertise

general auto repair,japanese,bmw,mercedes,mini cooper 1960/2009,general british cars,ford.I DO NOT work on automatic transmissions.Manual transissions i install clutches only.Many people ask me to diagnose noises from their cars,unfortunately i cannot do this unless i hear it.As you appreciate,vehicles can and will make a variety of noises.I DONT UPGRADE or fit aftermarket performace kits,parts,chips,only replacement parts.

Experience

40 years experience on all general auto repair.

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