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Old 02-17-2012, 04:22 PM
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sick 7.3

Truck has 320000 set for a month and has lost power after about 10 min. driving starts missing and acts as if its running out of fuel or sucking air changed fuel filter. Getting three codes p0733 p0478 p0470 starts and idles fine just won't run at road speeds let idle for a while and will run fine till you need the power. Is there a good book are manuel to buy to help with these problems.
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Old 02-17-2012, 04:34 PM
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Think you posted in the wrong forum. Maybe a mod can move it?

To your problem. What did the fuel filter look like?

P0733 - Gear 3 incorrect ratio, Mechanical/hydraulic failure, 4x4 switch failure
P0478 - Exhaust pressure control valve high input, Plugged sensor line, stuck butterfly, restricted exhaust
P0470 - Exhaust back pressure sensor circuit malfunction, Biased sensor, open signal return

Did the truck run fine before? How much is in the fuel tank?
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Old 02-17-2012, 04:43 PM
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sick 7.3

Fuel tank is full fuel looks good would get service engine soon light when i was pushing hard up hill but as soon after I let off the light would go out. and what form should I be on

Last edited by tractor69; 02-17-2012 at 04:49 PM.
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Old 02-17-2012, 07:14 PM
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99-03 7.3L Powerstroke Problems - Ford Powerstroke Diesel Forum
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