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COMES FROM:
- 2011 Infiniti QX-56 with 158568 miles.
- 5.6L DOHC 32V V8
- VIN NUMBER: JN8AZ2NE1B9003180
This was my personal car.
By mistake I connected a jumper in the opposite way.
CAR HISTORY:
- Few weeks later engine shake so was misfiring so mechanic installed all 8 new coils and 8 sparkplugs.
We had an old code for Oxigen sensor so we also change them. Engine had used synthetic oil since I bought the SUV with 75K miles.
- Engine and transmission were good before the first backfire code.
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