My 2000 f150 5.4 triton v8 runs really rough and jerks and sputters. But sometimes for a few blocks it runs smooth? And one time while driving it sputtered and stalled so I coasted with no power to edge of road. Turned the key back and then it just fired back up just fine but of coarse it still ran terrible. Please help if you can I don't have a lot of money to spend just replacing everything because I have 5 kids. Oh the check engine light stays on. Thank you!!

 

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