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2008 Chevrolet HHR SS 2.0L Poor Idle Quality
Posted to GM Driveability on 9/10/2018 12 Replies

This car came in running very rough and smelled as if raw fuel was passing through the engine, Had a code for the high pressure pump & a P0303. I swapped coils & plugs with no change, Misfire stayed on #3 My intuition told me the #3 cyl. probably had a bad...

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car Vehicle Data

2008 Chevrolet HHR SS

VIN 3GNCA63X48
Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / Direct Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursAlways

Trouble Codes

P0089Fuel Pressure Regulator 1 Performance
P0303Cylinder 3 Misfire Detected
Open Help Request

car Vehicle Data

2008 Chevrolet HHR SS

VIN 3GNCA63X48
Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / Direct Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursAlways

Trouble Codes

P0089Fuel Pressure Regulator 1 Performance
P0303Cylinder 3 Misfire Detected