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Old 01-06-2017, 02:01 PM   #1
Hicky69
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90 multiport 6cyl pontiac 6000 3.1

The idle seems like its stuck accelerating when decelerating slowing down stop & I dont come to a complete stop let of the brake the car will rapidly accelerate from almost 0 to 38mph Now If I actually have to come to a complete stop the Just about 1 second before I should come to a complete stop the idle will drop to about 1200rpm and litterally stop the vehicle and barely maintain an idle to keep from stalling and has stalled a cpl times. Have replaced TPS and new plugs and plug wires and disconnected & sprayed all plugs & connectors with electrical contact cleaner. car runs fine accept in stop & go traffic or having to come to a full stop. Any and all suggestion and help apreciated thank you
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Old 01-29-2017, 11:10 PM   #2
Tech II
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Re: 90 multiport 6cyl pontiac 6000 3.1

Throttle plate sticking? Bore dirty?

Possible IAC problem or Vac leak?
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