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No power on highway over 75mph.
I have a 97 12V that runs fine in the city, but running over 75mph the truck looses power and returns to an idle. I have to feather the pedal to race the engine and it returns to normal. White smoke is always coming from the tailpipe when this happens. Now to all the parts I have replaced: Fuel sender in fuel tank, fuel heater screen assembly, fuel filters, fuel shut-off solenoid and relay. Does any one have an idea what is happening? any advise would be greatly appreciated.
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01.5 quad cab 4x4 short bed, skyjacker 4.5" lift, weld mountain crushers, pro-comp 315/75/16 at's.DSS,luke's link, Fisher MM2 8' stainless X-blade. six hidden strobes, afe intake, 4" magnaflo ss, dd2 injectors, banks big-hoss, autometer ultralite boost,trans,egt,fuel gauges.
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