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1998 Buick LeSabre Custom 3.8L Misfire, MIL Lamp on
Posted to GM Driveability on 10/27/2009 21 Replies

Hello Fellow Techs, This car is driving me crazy. Vacuum was 17 in., did Motorvac, raised to 20 in. Vehicle has code P0300 - Misfires. At idle and low speeds, cylinders 2 & 6 show misfies. Under load, cylinder 1 misfires, cylinders 2 & 6 do not. Swapped 1 & 3 ...

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  Related Documents & Media  1998 Buick LeSabre Custom

 
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car Vehicle Data

1998 Buick LeSabre Custom

VIN [No VIN Available]
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Under Load, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1998 Buick LeSabre Custom

VIN [No VIN Available]
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Under Load, Idle

Trouble Codes

P0300Multiple Misfire Detected