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2006 Cadillac STS 3.6L Misfire
Posted to GM Driveability on 1/10/2017 9 Replies

Misfires at above 4500 rpm on bank 2 hard accel until shift point. Changed plugs/coils/plenum gasket. Cat not plugged. O2 sensors swapped. Intake cleaning and oil flushed. B1 stft on accel goes positive b2 stft goes solid negative 20. Exhaust and intake cams a...

9 Replies Received (View Replies)

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car Vehicle Data

2006 Cadillac STS

VIN 1G6DW67706
Engine3.6 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load

Trouble Codes

P0300Multiple Misfire Detected
P0302Cylinder 2 Misfire Detected
P0304Cylinder 4 Misfire Detected
P0306Cylinder 6 Misfire Detected
Message Closed

car Vehicle Data

2006 Cadillac STS

VIN 1G6DW67706
Engine3.6 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load

Trouble Codes

P0300Multiple Misfire Detected
P0302Cylinder 2 Misfire Detected
P0304Cylinder 4 Misfire Detected
P0306Cylinder 6 Misfire Detected