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Rev Limiter ???

Posted in the Pontiac Grand Prix Forum

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Rob Sylling

Ellensburg, WA

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#1
May 17, 2011
 
New owner of a 2002 Grand Prix GT car has 88500 mile and in great condition. But I am having a problem this the car. Car will not go above 4200 rpm with car in drive during moderate or heavy acceleration. Also if you shift from starting from 1st gear it is the same. Also when one try do hit passing gear from drive it will kick down but hang up at 4200 until you let of the gas a little. Dumb question is this normal or no I think not. Only other thing I could mention is while in park and raise the rpms rapidly you will hear a rattling sound form the area of the cat catalytic converter. No back fires or smells from the catalytic converter I do not no if this is a related issue THX for looking
Steve House

Conyers, GA

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#2
Aug 23, 2011
 
Rob Sylling wrote:
New owner of a 2002 Grand Prix GT car has 88500 mile and in great condition. But I am having a problem this the car. Car will not go above 4200 rpm with car in drive during moderate or heavy acceleration. Also if you shift from starting from 1st gear it is the same. Also when one try do hit passing gear from drive it will kick down but hang up at 4200 until you let of the gas a little. Dumb question is this normal or no I think not. Only other thing I could mention is while in park and raise the rpms rapidly you will hear a rattling sound form the area of the cat catalytic converter. No back fires or smells from the catalytic converter I do not no if this is a related issue THX for looking
Did you find out source of problem. I have 2003 Grand Prix GT doing exactly same thing and was told to accelerate easier. It rev limter used to kick in during hard accelleration at 5200-5500 RPM... now it does it at 4000.
Rob

Hayward, CA

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#3
Aug 23, 2011
 
The catalytic converter was the problem all is well now drives great

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