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Old 02-07-2014, 10:29 AM
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truck problems

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Hi all,I need some help with my 95' F250 7.3 powerstroke. First of all its has no power or acceleration,i am struggling to get 50mph,also not revving above 2500rpm on normal operating temp and therefore not shifing properly,a friend on the forum gave me some pointers and some info,what to check and what to do.I have checked the crank pickup,checked the tps(throttle pos sens on the pedal)measuring 180ohm to 2500 ohm,checked the boost pipes and found a rubber o ring that had a gap in it and replaced it,i have replaced the computerbox,i have replaced the fuelfilter and checked for loose wiring and connectorplugs,the engine is running and idling smooth,what could the problem be?no warning lights and no fualts on the diagnostics,i need help please as no one in SA wants to work on my ford.kind regards
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Old 02-07-2014, 11:09 AM
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need to run a fuel pressure test , also need to check and see if exhaust back pressure valve is staying closed
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Old 02-08-2014, 08:15 AM
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truck problems

thanx for the info,where is that valve located?is it on the turbo exhaust housing?how do i test it?what ese could be fualty?
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Old 02-08-2014, 08:33 AM
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The valve is just on the down side of the turbo and it closes when cold out. You can always unplug the 2 wire connector at the base of the turbo and that will disable it from closing anymore.


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Old 02-08-2014, 08:44 AM
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thank u.the truck revs up now but still no power
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Old 02-11-2014, 10:11 PM
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Hi,stiil no luck in trying to fix my truck,I don't know what could be wrong,checked everything but fuelpressure,no one knows where to test it?any help would be gladly accepted!
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Old 02-12-2014, 02:41 AM
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To test fuel pressure I think there should be a schrader valve just to the right of the fuel bowl. It faces towards the right. I believe that is the only place to test for the pressure.


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