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1999 Buick LeSabre Custom 3.8L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire
Posted to GM Driveability on 8/9/2005 15 Replies

This vehicle came in because it was running rough. Tech 2 indicated cyl. 4 was misfiring. When I pulled the #4 spark plug it was white. I pulled two more plugs and they were both white as well. I monitored the Ho2s and the fuel trim on my test drive. The Ho2s ...

15 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1999 Buick LeSabre Custom

VIN 1G4H952K6X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Cuts Out, Stall, Misfire
OccursCold, Hot, Under Load, on Accel, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1999 Buick LeSabre Custom

VIN 1G4H952K6X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Cuts Out, Stall, Misfire
OccursCold, Hot, Under Load, on Accel, Idle

Trouble Codes

P0300Multiple Misfire Detected