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No power, surging start, runs the worst in mornings '99 F450

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No power, surging start, runs the worst in mornings '99 F450

 
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Old 10-27-2008, 10:17 PM
99F450 Guy
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No power, surging start, runs the worst in mornings '99 F450

I have a '99 F450 stake bed dump, worked hard, maintained well, religious oil and filter changes, had new HPOP installed by a mechanic who I feel was grasping at straws, all injectors removed, supposedly cleaned (improperly I think), replaced 4 injectors, all new injector bolts. The turbo was replaced 3+ years ago, 2nd tranny last Feb. Someone told me about injector bushings that should be replaced every time injectors are pulled? I never heard the first mechanic mention this, anyone know anything about this? Oh yeah, the wire loom was replaced shortly after the camshaft positioning sensor was replaced. I cannot see putting any more $ into this if it's not worthwhile. 220,000 miles, starts on cold mornings 40-60 degrees and surges very bad until warmed up, 20 minutes later, takes off very slow with no power until driven for a few miles, seems to run better after warm but still LOW power compared to normal. Seems to have a miss unless my foot is on the floor or the turbo is spinning. Need help?! Love the rest of the truck but the motor is making me want my Cummins back. Any suggestions or know a GOOD mechanic in St. Louis, MO.
 
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Old 10-27-2008, 10:44 PM
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the cold surging could be injector pressure sensor,it's easlily checked by unplugging it.
It's located on top of left head toward front
was ICP lso changed with HPOP?
 
 
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