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2003 Cadillac CTS 3.2L Poor Idle Quality, Misfire
Posted to GM Driveability on 9/18/2009 17 Replies

vehicle came in with check engine light flashing and codes po300, po301, po303 and po305 all on the right bank. vehicle only misses at an idle. bring idle up to 1200 rpm, misfires stop. while at an idle, engine runs rough but not like all 3 cylinders are dead....

17 Replies Received (View Replies)

  Related Documents & Media  2003 Cadillac CTS

 
Message Closed w/FIX

car Vehicle Data

2003 Cadillac CTS

VIN 1G6DM57N13
Engine3.2 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0303Cylinder 3 Misfire Detected
P0305Cylinder 5 Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 Cadillac CTS

VIN 1G6DM57N13
Engine3.2 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0303Cylinder 3 Misfire Detected
P0305Cylinder 5 Misfire Detected