Interesting..my grandfather was a mechanic for 35 years and told me he will only use Shell, so I kinda picked it up from him. But, last night I went out and reseated my air filters nice and tight..the CEL went away..i drove the car about 2 miles and it felt as if it was starting to get better...does it take a bit for the ECU to re-learn (if it even has to from something like that) or was there air in the engine somewhere causing the misfire/jumping of the car/engine?
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