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1997 Cadillac DeVille 4.6L Misfire
Posted to GM Driveability on 7/25/2011 14 Replies

well this for gm tech car came engine service soon light on code po300 multi cylinder misfire. replace spark plugs wires and air filter. two wires were very coroded at coil tower. clear code road tested still feal misfire intermitanly. code p0300 came back. an...

FIX posted 7/27/2011

14 Replies Received (View Replies)

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car Vehicle Data

1997 Cadillac DeVille

VIN 1G6KD52Y9V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected