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International Automotive Technicians Network
1998 Chevrolet Lumina 3.8L Poor Idle Quality, MIL Lamp on
Posted to GM Driveability on 2/1/2001

To IATN members,

This Lumina here has a dead miss at idle only with a code PO305 (CYLINDER # 5 MISFIRE DETECTED). Compression is good,leak down is good,I've swapped injectors,igniton wires,spark plugs and coil pack. I've also blocked off the egr valve and spr...

 
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Lumina

VIN 2G1WL52K5W
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursIdle

Trouble Codes

P0305Cylinder 5 Misfire Detected
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Lumina

VIN 2G1WL52K5W
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursIdle

Trouble Codes

P0305Cylinder 5 Misfire Detected