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1999 Oldsmobile 88 Royale 3.8L Misfire
Posted to GM Driveability on 11/21/2007 10 Replies

can anyone help car came in for engine miss. scaned for codes po203 and po303. replaced injector #3 with aftermarket injector. left running for about 1 hour not missing drove car started to miss after a few minutes. scaned had same codes.replaced DME performed...

FIX posted 1/3/2008

10 Replies Received (View Replies)

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car Vehicle Data

1999 Oldsmobile 88 Royale

VIN 1G3HN52KXX
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursHot

Trouble Codes

P0203Fuel Injector 3 Circuit Malfunction
P0303Cylinder 3 Misfire Detected