7.3 no start - no voltage to IPR - Ford Powerstroke Diesel Forum
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Old 01-21-2009, 12:03 PM
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7.3 no start - no voltage to IPR

I've got a 2000 F450 7.3 with 180k miles. I was having hard starting problems so and took it to a mechanic who said I needed 6 new injectors. I opted to rebuild my injectors, which I did. The truck was running fine after that except for it would occasionally die at a stop light but would restart fine. I've had several powerstrokes in the past and this was always the CPS. Anyway, I degreased and power washed then engine the other day and then took the truck around the block where it died and will not restart. I immediately replaced the CPS with my spare, but no luck. I also replaced the IDM with a known good one. Still no luck. I finally broke down and bought the auto enginuity scanner. The HPOP is full, oil clean, and new filters. I have good voltage while cranking and RPM's at 148. However, the ICP volts are .22 and the FUEL PW is 0. I tested the voltage at the IPR connector and get battery voltage at one post and .22v on the other with the key on. It seems to me that the computer is not telling the IPR to increase pressure. Does anyone know why not? Are there any requirements that must be met before the PCM sends the IPR voltage?
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Old 01-21-2009, 12:18 PM
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Old 01-21-2009, 12:31 PM
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Yes... that is exactly the sound as I bang my head against the wall
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Old 01-21-2009, 02:04 PM
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