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Old 01-20-2011, 11:17 AM
tchmstr tchmstr is offline
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Join Date: Jan 2011
Posts: 1
Default runs like crap sometimes???

hey there every one im new here and something is wrong with my truck.

crusing at highway speed at say 70mph out of the blue the truck will start running like crap spitting and sputtering if i give it more gas and excelerate hard it will seem to clear up and run like an raped ape.or if i down shift to 4th it seams to run better. then like it came it all gets better.
this is what ive done so far. new fuel filter, cleaned mass air , spark plugs, wires, coil pack, and looked for vacum leakes
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Old 01-20-2011, 11:59 AM
Clinton Clinton is offline
Join Date: Mar 2010
Posts: 14,049
Default Re: runs like crap sometimes???

You should post the specs of your truck, then post it in the proper engine tech, it will get you more answers
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