working on a 97! - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 11 (permalink) Old 02-11-2013, 06:30 PM Thread Starter
rollingcoal21
 
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working on a 97!

i trying to figure out my friends truck problem its a 96 ford f350 crew cab dually 5sp 7.3 diesel and it would start cold but not hot and had a code for the ipr and icp put new ones in it and still doing then that made me think the high pressure oil pump was weak so he found one another pump and put in on but now it wont start so i checked for fuel pressure and it was very low so put a new fuel pump on it and then started cranking it and saw smoke from under the hood and from the valve cover harness checked them they were all burnt so replaced all that stuff and charged the batterys up it and tryed to start it still nothing but we there is smoke out of the tailpipe and the oil gauges come up real fast when u crank on it so what could i try next i am out of ideas anybody please help thanks?
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post #2 of 11 (permalink) Old 02-12-2013, 02:14 AM
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Re: working on a 97!

Stupid question but did you fill the hop reservoir back up when you replaced the pump?

95 F350 CCLB, 270,000. ZF5 conversion, 6" springs with 38" Kumhos, 6637 intake, ts 6 with beans tunes, 3" dp to 4" duals, 410 rears

95 F350, RCLB, 330,000. ZF5 conversion, 6" springs, 3" dp, 5"dual stacks, 456s w/ lockers front and rear, 37" Militarys, wicked wheel, TS 6 pos, afe intake, pillar gauges
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post #3 of 11 (permalink) Old 02-12-2013, 02:54 AM
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Re: working on a 97!

What do you mean by oil gauges come up fast? there is only one gauge. In reality, the gauge is a switch that comes on at about 6 psi. If its a real gauge it would not come up real fast because during start/cranking the oil momentarily lowers in the reservoir before the low pressure pump can fill it (and activate the gauge at the top of the reservoir)--when the motor starts, the reservoir fills, catches up and pressure rises.

When you replaced the pump, air got into the rails but it should still start.

Sudden burnt UVCH wiring? hmmm.... Check all the wiring, replacing what is necessary. Confirm the sub harness that supplies the IPR is good.

I'd backup, check your work, find out why the harnesses are suddenly smoked, make sure the hpop gear is tight, slowly troubleshoot your way back. If were me, I wouldnt have replaced the pump until I was certain the rails were sealed and confirmed the pump was not building pressure....guessing and parts replacing often delays your progress with an unconfirmed variable.

2000 F250 CCSB-- GT4294R, 250/100s, Dahl/Fuelab, PHP, scan gauge, stock 17* pump

1994 F250 4x4 SC (sold)
1997 F250 CCSB 2wd (sold)
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post #4 of 11 (permalink) Old 02-12-2013, 06:26 PM Thread Starter
rollingcoal21
 
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Re: working on a 97!

well i check it and the pump would not pump over 400 psi and yes i filled it back up and he tryed to push start it we got it to run for about a block and then its like u loose the foot feed then it slower dies i checked all the wires and everything traced back from the beginning and still nothing so need some help
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post #5 of 11 (permalink) Old 02-12-2013, 07:16 PM
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Re: working on a 97!

How's your injector o-rings. And does it miss when you do get it running?

96 with 320,000, Idm mod,
Tc mod, van turbo, 200/30 rosewood,
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post #6 of 11 (permalink) Old 02-12-2013, 07:40 PM
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Re: working on a 97!

I had a truck do this to me and it ended up being the little spring in the bottom of the fuel bowl. Pull the filter and drain the bowl and check that

95 F350 CCLB, 270,000. ZF5 conversion, 6" springs with 38" Kumhos, 6637 intake, ts 6 with beans tunes, 3" dp to 4" duals, 410 rears

95 F350, RCLB, 330,000. ZF5 conversion, 6" springs, 3" dp, 5"dual stacks, 456s w/ lockers front and rear, 37" Militarys, wicked wheel, TS 6 pos, afe intake, pillar gauges
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post #7 of 11 (permalink) Old 02-12-2013, 07:58 PM
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Re: working on a 97!

I had the exact same issue and burnt up my glow plug/ injector harsness also on a 97. After basically the same list of parts as you, figured out the it was the computer. Long story short, a guy had pulled the computer to "check something" and put the wrong one back in it that had a bad IPR circuit it. Try and swap a computer if you can borrow one. Fixed all my problems. It turned out that computer was out of a friends truck and the guy hung on to it for whatever reason.

2003 F-250 CCLB 7.3L
4" lift and PMF traction bar/block setup running 35s on 20x12s. Intake, exhaust, PHP Hydra w/ Gearhead tunes, gauges
2005 F-350 CCLB 6.0L
6" lift on 20x10s and 37s, studded, deleted, Powermax and Livewire with Quicktricks tunes, exhaust, intake (Wife's Truck)
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post #8 of 11 (permalink) Old 02-12-2013, 09:00 PM
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Re: working on a 97!

Quote:
Originally Posted by old Smokey View Post
How's your injector o-rings. And does it miss when you do get it running?
X2-- agreed

Trucks that start cold but die, or dont start, when hot typically have ICP issues. Even bad pumps will supply 5-600 psi and idle good with a sealed, regulated system. The pump only supplies the pressurized oil, the IPR regulates it, and the ICP gives feedback to the PCM. Confirm that the oil rails in the heads hold pressure before condemning the pump.

Havent heard anything about new codes yet either. Whats up there?

2000 F250 CCSB-- GT4294R, 250/100s, Dahl/Fuelab, PHP, scan gauge, stock 17* pump

1994 F250 4x4 SC (sold)
1997 F250 CCSB 2wd (sold)
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post #9 of 11 (permalink) Old 02-14-2013, 01:01 AM Thread Starter
rollingcoal21
 
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Re: working on a 97!

Well I will look at all that I am gonna scan it again tomorrow to see what codes it has in it
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post #10 of 11 (permalink) Old 02-15-2013, 06:21 PM Thread Starter
rollingcoal21
 
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Re: working on a 97!

well i scanned it again and i pulled alot of codes from it so p0122 p0236 p0340 p0470 p0478 p0603 p1211 p1212 p1280 p1661 thats what i got so the pump he put on was a used one so they said it worked any ideas now
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