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1992 Oldsmobile Cutlass Supreme International 3.1L Poor Idle Quality, Misfire, Worse when warmed up
Posted to GM Driveability on 9/12/2019 37 Replies

This car came in for a misfire under load, the hotter the vehicle gets, the worse the misfire is. Number 6 cylinder seemed to be dead. Compression was good, 150psi, spark seemed weak compared to other cylinders. Swapped coils and wires, still the same. Cha...

37 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1992 Oldsmobile Cutlass Supreme International

VIN 1G3WR14T6N
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD1
SymptomsPoor Idle Quality, Misfire, Worse When Warmed Up
OccursHot, Under Load, Idle
Misc.Had an IAC Code, Did Not Reset
Message Closed w/FIX

car Vehicle Data

1992 Oldsmobile Cutlass Supreme International

VIN 1G3WR14T6N
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD1
SymptomsPoor Idle Quality, Misfire, Worse When Warmed Up
OccursHot, Under Load, Idle
Misc.Had an IAC Code, Did Not Reset