Intermittent hot start issue question - Page 2 - Ford Powerstroke Diesel Forum
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post #11 of 15 Old 06-06-2019, 07:22 AM
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IPR:
IPR should be around 14% (10% - 15% is ok) DC @ key-on-engine-off
IPR should be around 40-60% (80 is possible) DC when cranking.
IPR should be 22-24% at hot idle (MAYBE as high as 29%)
IPR should be 26 - 27% at cold idle

ICPv:
0.15v - 0.35v (typical is 0.19-.24v) KOEO, no pressure registering on my HPO gauge
0.8v to 0.9v cranking typically - could be higher though, around 520 to 650 psig
0.82v - 0.85v at hot idle - around 520 - 600 psig
1.25v - 1.35v at cold idle - around 860 - 960 psig

Last edited by bismic; 06-06-2019 at 11:09 AM.
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post #12 of 15 Old 06-06-2019, 07:56 AM Thread Starter
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Awesome!

Thank you very much
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post #13 of 15 Old 06-06-2019, 09:54 AM
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Quote:
Originally Posted by bismic View Post
IPR:
IPR should be around 14% (10% - 15% is ok) DC @koe O
IPR should be around 40-60% (80 is possible) DC when cranking.
IPR should be 22-24% at hot idle (MAYBE as high as 29%)
IPR should be 26 - 27% at cold idle

ICPv:
0.15v - 0.35v (typical is 0.19-.24v) KOEO, no pressure registering on my HPO gauge
0.8v to 0.9v cranking typically - could be higher though, around 520 to 650 psig
0.82v - 0.85v at hot idle - around 520 - 600 psig
1.25v - 1.35v at cold idle - around 860 - 960 psig
We have a member named @koe ? I wonder if he meant to make KOEO? That would be semi-hysterical.

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post #14 of 15 Old 06-06-2019, 11:09 AM
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lol .
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post #15 of 15 Old 06-07-2019, 08:06 AM Thread Starter
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After receiving my new relay I disassembled the relay that gave me the no start issue. The contact points were pitted but not burnt like some bad ones I have seen in the past. 100k is a good benchmark for this working relay's life I guess.
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