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ksengage31
ksengage31, ASE Certified Technician
Category: Car
Satisfied Customers: 61
Experience:  Master Certified Technician Specialist in driveability and engine diagnostics.
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rough running and misfire

Customer Question

rough running and misfire
Submitted: 4 years ago.
Category: Car
Expert:  ksengage31 replied 4 years ago.

ksengage31 :

Hi, my names Jesse and id be happy to offer some assistance.

ksengage31 and 4 other Car Specialists are ready to help you
Expert:  ksengage31 replied 4 years ago.
Misfire conditions are a relatively common problem with this vehicle. Can you tell me if theres an engine light still on, or if you know of the trouble codes presently active?
Customer: replied 4 years ago.
YES ENGINE LIGHT IS ON PO355 P1000 P356
Expert:  ksengage31 replied 4 years ago.
Ok, and i see that you have already replaced two coil packs working on this problem.
Good inormation. Something interesting to know about this engine series, is its very common for them to set a trouble code for a cylinder misfire, on the wrong cylinder. Faulty coil may be on cyl 4, code for 6... etc.
Its important to remove and visually inspect all the coils for any signs of carbon tracking, discoloration, cracks, anything that indicates arcing was present. Did you or can you do this first before we move on?

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