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Discussion Starter #1
While driving on the highway my car jerks a lil sometimes it rattles real hard and then shutsoff then I cut it on and it rattles and shuts of I wait a lil while turn it on and im driving again what can that be I put in fuel injector cleaner premium gas and it still does it I recently change the harmonic balancer tune it up change my msd ignition and water pump what can be the problem can a bad alternator couse that ??? HELP PLZ
 

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Do you have a tune that is set up for you to run premium?
 

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Discussion Starter #7
Na it hesitates always the rumble real hard then shutting off happens sometime whenever it feel like it but I notice if I sit it for 1month then cruise it will run good for 2 days the. Back to the same problem
 
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