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ok, now my timing is jumping around making it ping and backfire and i have re-timed it 3 times now and its still messing up, i also got a SES light yesterday morning for a few min and it was code 45, later that day i went to start it up to leave and the truck started to surged really bad and after a quick rev it went to a normal idle.. so what would be causing these problems?
 

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ok, now my timing is jumping around making it ping and backfire and i have re-timed it 3 times now and its still messing up, i also got a SES light yesterday morning for a few min and it was code 45, later that day i went to start it up to leave and the truck started to surged really bad and after a quick rev it went to a normal idle.. so what would be causing these problems?
what model/year/engine do you have?
 

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it's not fast enough
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1,677 Posts
When is the last time you tuned it up? I had a major problem with my 97 doing that bc the distributor an rotor kit was bad
 
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