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O9 shelby gt500 multiple misfire

2K views 0 replies 1 participant last post by  Tlipford4961 
#1 ·
Hey guys I'm really in need of help I've had this car for 5 mths ran perfectly .but one day my check engine light flashed and went back off but now the car acts like it backfires we I give it the gas idle is like it has a skip put a scanner on it comes back with the multiple misfire and catylic converter I only run 100% unleaded gas what you all think
 
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