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Old 03-09-2014, 06:40 PM
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Help!!

My truck won't start. No smoke when cranking. Heres the codes, disregard ICP and transmission codes. I'm thinking IPR is the culprit.



BTW ICP cranking pressure doesn't exceed 170, IPR cylcle is 64.84. Thanks in advance.
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Old 03-10-2014, 02:13 AM
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Bump bump bump
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Old 03-10-2014, 06:16 AM
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Anybody? Bump
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Old 03-10-2014, 06:29 AM
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HPOP????? but it's not a 6.oh so i'm not to sure. just getting to learn the 7.3 b/c my father just bought a 7.3 box truck
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Old 03-10-2014, 10:00 AM
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Not enough ICP to start and DC is way too high. It probably won't work but you can try unplugging the ICP and starting. Also make sure the tin nut is still on the IPR and tight.

P1293 and P1294 show up when injector/glow plug harnesses are unplugged.

Clear those codes and see if those 2 and the P1283 come back.
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Old 03-10-2014, 11:50 AM
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use datasteam to monitor the ICP actual, Ipr duty cycle. You need at least 500psi HPO to fire the truck.
If the ICP pressure is less than 500 and the duty cycle is up to 65% or more then you could have a bad ICP, IPR , HPOP or a HPOP leak.
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Old 03-12-2014, 06:06 PM
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Thanks for the input, I just ordered a new IPR. I'm pretty sure codes p1293 and 94 are from me replacing my injectors and cranking the engine with the harnesses unplugged. My IPR is supposed to be here tomorrow and I'll give another update then.

Edit: I should have been clearer in my op but I already unplugged the ICP and tried to start it hence the code. ICP was around 170 and IPR duty cycle was at 65%

Last edited by E99F350Stroker; 03-12-2014 at 06:13 PM.
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Old 03-16-2014, 09:34 AM
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Another update, my IPR came in, I installed it and I'm still getting code p1283, no start, and low ICP pressure. There is bare copper showing on the connection to the IPR harness and ICP harness. I have an extra UVCG harness and the injector leads happen to be the same as the IPR. I'm gonna splice a new section in and see if that does the trick.

Also if anyone has any other ideas for causes of low ICP pressure (between 200 and 220 PSI) all input is appreciated.

Last edited by E99F350Stroker; 03-16-2014 at 09:35 AM. Reason: typo
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Old 03-16-2014, 10:58 AM
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Bump...again
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Old 03-17-2014, 07:20 PM
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I'd say bad hpop, check ur icp sensor to see if there is oil inside the sensor if so replace that, if not then I say bad hpop.
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