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1997 Cadillac DeVille 4.6L Misfire
Posted to GM Driveability on 4/18/2001

Hi Techs,

I'm looking for some help or advice on this Caddy. The car has a slight occasional missfire that Sets the code PO306. We have replaced the spark plugs and wires. We tried a different coil and injector and the same code set. Fuel pressure is 40 psi r...

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Message Closed w/Summary

car Vehicle Data

1997 Cadillac DeVille

VIN 1G6KD52Y3V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursIntermittently
Misc.Sedan
Message Closed w/Summary

car Vehicle Data

1997 Cadillac DeVille

VIN 1G6KD52Y3V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursIntermittently
Misc.Sedan