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1993 Oldsmobile 88 Royale LS 3.8L Poor Idle Quality, Misfire
Posted to GM Driveability on 10/21/2010 15 Replies

I dire need of help!! I have an olds 88 with a 3.8, that has a hard misfire on cylinder 1. I have changed the coil, the plugs, the wires, swapped the injectors, all with no change. I checked compression and it reaches 155 psi and holds. The fuel pressure is a ...

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car Vehicle Data

1993 Oldsmobile 88 Royale LS

VIN 1G3HY53L9P
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / tune port injection
SymptomsPoor Idle Quality, Misfire
OccursAlways, Idle
Message Closed w/FIX

car Vehicle Data

1993 Oldsmobile 88 Royale LS

VIN 1G3HY53L9P
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / tune port injection
SymptomsPoor Idle Quality, Misfire
OccursAlways, Idle