Hello, New to site, 2007 CHEVY HHR 193,000 Miles wont shift pass 40mph, got Che k engine codes, misfire cylinder 2, replaced all New spark plugs and 1 IGNITION COIL, disconnected battery from car for one hour, check engine light went off, check engine light came back on, same code cylinder 2 misfire, never changed transmission fluid when car purchased at 106,000 Miles, Any Help Would be greatly appreciated....

 

What gear is it in? Mine is usually in 4th by 40 MPH.

Why did you replace the coil? Any reason to believe that was the problem, like switching coils to see if the misfire followed?

Any other codes? Hard shifting? Compression and leakdown test?

 

Hi Zee, to the forums!!

donbrew has asked some good questions. You've pretty much eliminated spark plugs and coil as causes. You're left with mechanical damage(hence the compression/leakdown suggestion), and fuel(pump, injector). What spark plugs did you install(manufacturer/part number)?

Did I just use the word hence?

 

Need the code numbers and not generic descriptions. Post up the actual numbers such as P0001, P0002 etc.