Hello, I'm new to the forum, but i've been told this is the place to go for answers. I have a 2002 7.3 Powerstroke that will crank, but won't start. I was driving down the road to work, and the truck just shut off on me, no warning, no check engine, no spit-n-sputter, just bam, shut off, luckily I coasted into a gas station and tried to start my truck again, but to no avail it wouldn't start. I had a buddy tow me back to my house, where I hooked up my actron scanner to see if it was pulling any codes, but no codes showed up. I read in my Ford Repair Manual that there was a recall on the CPS, so I replaced that, but it still wont start. I read a little bit about the bowl heater shorting out and blowing fuses, but all my fuses are intact, and I live in the south so any of the heating equipment rarely gets used. My HPOP Oil level is good, nearly full. My fuel pump is working and the bowl fills up. I've got 230k miles on the truck and never had to replace anything major. Any help would be appreciated.

Regards,

Adam.

 

i have 03 that had a similar problem there is a fuseable link inbetwee air box and cab it is what powers the cab check that my truck would start and shut off with in seconds just check that i found mine by accident

 

You've checked all fuses in the cab and under the hood? Not just visually but with a meter?

 

@poor boys, I couldn't find the fuseable link you were talking about, but I checked all the relays in that area and they're all good.

@95power I just hit them all with a meter and they're all good.

 

Ive had Ipr nuts fall off and cause similar issues. Are you able to see icp ? Chances are that would throw a code but without a little more data that might be a challenge to diagnose. Ive also had idm's fail with no codes/no start

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IPR nuts are all still on, can't see icp. I took out my IDM and im gonna eat lunch then take it to my brothers to swap out for his to see if thats the problem, will update later.

 

If you back probe the icp sensor (pin 2/ dark blue with light green tracer) you can determine via voltage if you have enough oil pressure to start. You would look for a minimum of .83V (500 psi ) while cranking. 1.4v is 1000psi for references sake. If this figure is below .02 you'll need to check vref and ground.

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Only showing me .14V while cranking..

*Edit*

I noticed too that my ICP sensor was also oily when I unplugged it, im guessing this is a sign that is bad.. How much you reckon a new one would cost? And what does ICP actually stand for? Injection Control Pressure?

 

KOEO measure voltage with the volt meter common in one of the other pins and the red lead to the other pin (not the signal you initially checked). You should see 5 volts


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Correct injection control pressure. You checked the first test with it plugged in right?
Oil could indicate a failed sensor but the next test i posted will verify sensor ground and reference (vref). If its good, you eaither have low pressure in the hpo circuit or a failed sensor. You could unplug it and see if it starts but the correct way to test it is with a scan tool. You could watch signal voltage for the icp pid and unplug the sensor. If the voltage changes wiring is verified good. If if you jump vref to signal and the truck starts the sensor is bad. (signal is just a voltage sensing circuit is a pull up design and may have bias voltage on it) i normally don't offer instructions for testing in that manner and it would be much safer to use a test light!
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