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1992 Pontiac Grand Prix LE 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy
Posted to GM Driveability on 10/30/2005 21 Replies

hello fellow techs,

Got myself in a quarrel here working on uncle's car. it has a cylinder 5 misfire that only occurs at idle, off idle it is fine. I have replaced the injector, put new plugs and wires on it. it has great compression 175 and leakdown was 10-1...

21 Replies Received (View Replies)

  Related Documents & Media  1992 Pontiac Grand Prix LE

 
Message Closed w/FIX

car Vehicle Data

1992 Pontiac Grand Prix LE

VIN 1G2WH54T7N
Engine3.1 L / 6 cyl / GAS
Trans3-speed Automatic
DeliveryFI / mpfi
Emissionsobd1
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy
OccursAlways, Idle

Trouble Codes

35iac circuit malfunction
Message Closed w/FIX

car Vehicle Data

1992 Pontiac Grand Prix LE

VIN 1G2WH54T7N
Engine3.1 L / 6 cyl / GAS
Trans3-speed Automatic
DeliveryFI / mpfi
Emissionsobd1
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy
OccursAlways, Idle

Trouble Codes

35iac circuit malfunction