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Anyone please help or needed your suggestions.
Car currently has misfire on both banks 6,10,11 and 12. Car runs fine for the most part, but at a high speed 80mp+ above car shakes and vibrates real bad and I can feel that the car does not perform up to it's potential. In this case, what do you guys think? Both coil packs are bad or a bad transformer.
Car bought used 2 yrs ago and was told that the transformer and both packs were replaced. I checked the coil packs and they appear to be the newest version. I replaced all 24 plugs 4 months ago along with new fuel filter.
Let me know what you think guys.
Much appreciated!!!
I had the same misfire on my 05. Mine ended up being a combination of problems. Someone before me had changed coil packs but when they did they put in mismatched plugs...valve covers were leaking big time...they didn't replace the silicon boots and had shorting out problems...multiple vacuum hardlines were leaking from the extreme heat under the Hood.