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2007 Chevrolet Impala LT 3.5L Misfire
Posted to GM Driveability on 4/3/2013 8 Replies

Very slight miss on #4 . Changed plugs ,wires checked fuel pressure , vucum all very good . Mis does not start until engine runs for 30 to 40 seconds checked vacum leaks at manifold seems good cannot reach #4 injector with out disassembly of intake . We think ...

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  Related Documents & Media  2007 Chevrolet Impala LT

 
Message Closed w/FIX

car Vehicle Data

2007 Chevrolet Impala LT

VIN [No VIN Available]
Engine3.5 L / 6 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load, Idle
Misc.Flex Fuel

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2007 Chevrolet Impala LT

VIN [No VIN Available]
Engine3.5 L / 6 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load, Idle
Misc.Flex Fuel

Trouble Codes

P0300Multiple Misfire Detected