2012 Shudder & Jerk
02-07-2018
#61
If you think a good mechanic is expensive, try hiring a bad one
02-08-2018
#62
Buckeye
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Re: 2012 Shudder & Jerk
Not sure how competent and knowledgeable he was (though he seemed to be), but yes. I did take him for a drive and caused the issue to appear both on surface streets and the freeway. He can back after identifying a broken engine mount...it was replaced and the issue remains.
02-08-2018
#63
If you think a good mechanic is expensive, try hiring a bad one
Re: 2012 Shudder & Jerk
Not sure how competent and knowledgeable he was (though he seemed to be), but yes. I did take him for a drive and caused the issue to appear both on surface streets and the freeway. He can back after identifying a broken engine mount...it was replaced and the issue remains.
02-08-2018
#64
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Problem identified: The COP on cylinder 2, was faulty. 
No more 
Thank you to all who assisted in providing recommendations, suggestions, and advice.
No more Thank you to all who assisted in providing recommendations, suggestions, and advice.
02-08-2018
#65
If you think a good mechanic is expensive, try hiring a bad one
02-08-2018
#66
Buckeye
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No codes ever appeared. Dropped the car off at a local shop. the mechanic called and said it was the COP on the #2 cylinder. When he moved it to the #1 cylinder, the problem followed. I'm assuming he has a 'super OBD' that can indicate cylinder misfires...?
10-26-2022
#67
Re: 2012 Shudder & Jerk Had intermittent shudder and jerk for a few months. Car was throwing no codes and no check engine light. nothing on my scan tool.
Tried transmission drain and fill. fluid looked okay. Also changed out transmission filter. No changes.
Put in some STP fuel system cleaner. no difference.
Took it to a local foreign car mechanic.
His scan tool showed tons of misfires on bank 2 spark plug and then it would clear back to 0
He pulled the plug and the ceramic was cracked and looked to be arching.
Swapped all four plugs and replaced ignition coil on bank 2
Runs like new.
Tried transmission drain and fill. fluid looked okay. Also changed out transmission filter. No changes.
Put in some STP fuel system cleaner. no difference.
Took it to a local foreign car mechanic.
His scan tool showed tons of misfires on bank 2 spark plug and then it would clear back to 0
He pulled the plug and the ceramic was cracked and looked to be arching.
Swapped all four plugs and replaced ignition coil on bank 2
Runs like new.
The following users liked this post:
sdaidoji (10-26-2022)
