Another Crank No Start - Ford Powerstroke Diesel Forum
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Old 02-13-2014, 08:47 AM
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Another Crank No Start

While driving Saturady after already being on the road about 3 hours in cold weather I was pulling a slight grade accelerating up to about 50mph, The Truck stalled & Started once, about 4 seconds later it did it again and then the third time Nothing, I was lucky enough to coast over to the shoulder and swap out a CPS as I had tripped a P0340 code.

2 CPS swaps later First a Ford unit, second a Parts store unit I purchased when I was broken down hoping for the best. I still had a dead truck. After trailering it home and hooking it up to an IDS Computer here is what I found:

While Cranking

55% IPR Duty Cycle
>10psi ICP Pressure, no thats not a typo Ten psi...
14psi fuel pressure measured at FPR With Analog Gauge
150-200RPM on Tach & IDS
Buzz Test Passed
Batteries 14v while scanning

I did not make a not of the pulse width.

Am I right to assume this is most likely an IPR Failure? I don't want to throw parts at this and I am lucky I have Diagnostic tools at my disposal to help troubleshoot.
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  #2  
Old 02-13-2014, 11:03 AM
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Disconnect the ICP and try again. Fuel pressure sounds low, too.
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Old 02-13-2014, 11:16 AM
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No change with the ICP unplugged, That was the next thing I tried on the side of the road after the CPS swaps
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Old 02-13-2014, 01:29 PM
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Was the 10 psi ICP _after_ disconnecting the sensor and cranking?
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Old 02-13-2014, 02:20 PM
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55%/10psi .4pw with sensor plugged in
35% 2465psi and 2.53pw default values with sensor unplugged
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Old 02-15-2014, 03:30 PM
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Replaced the IPR valve, still no change. Cranks and no start, pressures remain the same on my scanner.
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