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2006 Chevrolet HHR LT 2.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 8/15/2009 10 Replies

random misfire is back all coils appear to be ok the misfires are on cylinder # 1 if i snap throttle some show up on # 2 not many though used oe plugs, very perplexing what i though was a simple fix has turned into something else, any help will be [...] after ...

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  Related Documents & Media  2006 Chevrolet HHR LT

 
Message Closed w/FIX

car Vehicle Data

2006 Chevrolet HHR LT

VIN 3GNDA23P76
Engine2.4 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / mpi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

4561Undocumented code traction control sets when mifire does
P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2006 Chevrolet HHR LT

VIN 3GNDA23P76
Engine2.4 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / mpi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

4561Undocumented code traction control sets when mifire does
P0300Multiple Misfire Detected