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2000 Pontiac Sunfire GT 2.4L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 1/28/2009 4 Replies

This car has a poor idle problem. Codes p0300 (random misfire) and p0420 (cat efficiency) were in memory. both happened at idle, p0420 in park and p0300 in 2nd gear. both no vehicle speed - freeze frame does supply temp reading. When the tranny is in park it s...

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  Related Documents & Media  2000 Pontiac Sunfire GT

 
Message Closed w/FIX

car Vehicle Data

2000 Pontiac Sunfire GT

VIN 3G2JD12T3Y
Engine2.4 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected
P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

2000 Pontiac Sunfire GT

VIN 3G2JD12T3Y
Engine2.4 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected
P0420Catalyst Efficiency Below Threshold (Bank 1)