ICP IPR Issues no start - Ford Powerstroke Diesel Forum
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Old 03-22-2014, 07:34 AM
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ICP IPR Issues no start

I replaced my icp sensor because it was surging the (pigtail and the sensor) and it would crank but not start this took me all of 5 hours last night I went to bed frustrated, got up this morning and it fired right up! So I turned it off and tried to start it again.. nothing. crank and no start. I unplugged the ipr and tried to start it with it unplugged.. nothing. If anyone has ever dealt with a situation like this help would be greatly appreciated!
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Old 03-22-2014, 09:20 AM
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First, you cannot unplug the IPR and have the engine run..

That's an ICP test (the PCM sets a default value for the IPR to run with)

Second - STOP "throwing parts" and have the truck scanned while it's doing this (Unfortunately, it takes a professional scanner and the Generic OBD-II scanners like the Auto Parts stores use don't do us much good). These sensors are expensive, you'll be better-off spending on a diagnoses, and only buying what you actually need to, than trying to "guess"
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Old 03-23-2014, 05:14 AM
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^^^^x2. There is only so much that you can do, especially on a powerstroke, without a good diagnostic scanner.
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Old 03-25-2014, 10:34 PM
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You didn`t say you had any codes flashing. To me that would mean that it is something without feedback to the computer. One fuse to check is the fuel heater fuse. If that blows it will not start (fuse 21 or 22 on an older PSD), not sure on yours. It seems also that it is a bit intermittent which makes it a bit harder to diagnose, unlikely fuse in this case. I also had some trouble with Orings on the one solenoid valve at the backside of the HPOP (it has the thin tin nut holding the solenoid on) and I can`t remember the name of it. It definitely did start when cold but not when warm. This was on my 95 psd. Has anybody tried the autoenginuity tester used with a laptop to test PSD. I am looking into that for my truck but would like to know from someone who has experience with a pro scan tool vs the auto enginuity one.
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Old 03-27-2014, 06:28 PM
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Quote:
Originally Posted by fasteddy View Post
You didn`t say you had any codes flashing. To me that would mean that it is something without feedback to the computer. One fuse to check is the fuel heater fuse. If that blows it will not start (fuse 21 or 22 on an older PSD), not sure on yours. It seems also that it is a bit intermittent which makes it a bit harder to diagnose, unlikely fuse in this case. I also had some trouble with Orings on the one solenoid valve at the backside of the HPOP (it has the thin tin nut holding the solenoid on) and I can`t remember the name of it. It definitely did start when cold but not when warm. This was on my 95 psd. Has anybody tried the autoenginuity tester used with a laptop to test PSD. I am looking into that for my truck but would like to know from someone who has experience with a pro scan tool vs the auto enginuity one.
The AE has worked great for me, IMHO it's the best bang for your buck. Also btw the part name that your trying to remember is called the IPR.
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