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2008 Chevrolet Impala LS 3.5L Misfire, Poor Fuel Economy
Posted to GM Driveability on 9/5/2013 15 Replies

this vehicle came in with no check engine light just a surge at idle. I checked codes and found a stored p0300. I checked the scan tool data and found a cylinder 4 misfire on a graph. Spark plugs had a large gap and burned up. I checked the spark and cylinder ...

15 Replies Received (View Replies)

  Related Documents & Media  2008 Chevrolet Impala LS

 
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car Vehicle Data

2008 Chevrolet Impala LS

VIN 2G1WB58K08
Engine3.5 L / 6 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy
OccursCold, Hot, Idle, Intermittently
Misc.Flex Fuel Vehicle

Trouble Codes

P0300Multiple Misfire Detected
P0304Cylinder 4 Misfire Detected
Message Closed

car Vehicle Data

2008 Chevrolet Impala LS

VIN 2G1WB58K08
Engine3.5 L / 6 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy
OccursCold, Hot, Idle, Intermittently
Misc.Flex Fuel Vehicle

Trouble Codes

P0300Multiple Misfire Detected
P0304Cylinder 4 Misfire Detected