1996 dies/ won't start when warm

[1996powerst0ke]

I just bought a 96 powerstroke from a family member and they told me about the problem before I bought it. But when it's warm it dies then won't start for sometimes up to 30 minutes and if you shut it off when warm sometimes it won't start. It's acting like its not getting any fuel then very rarely it will fire or almost start then die. I need to get it running right! I'm thinking it might be something to do with the hpop or ipr. The truck only has 100k miles so I'm assuming it's not something horrible and it's been grandpa owned since day one so not drivin hard. Any help is very appreciated. I can try to provide more info if needed. Thanks everyone.

[Patrick Feeley]

The "usual" problem for a no-start when warm tends to be bad Injection Pressure Regulator (IPR) o-rings. Hot (and thinner) oil will bypass the bad o-rings easier than colder (and thicker) oil causing a loss of High Pressre Oil System pressure. The o-ring kit is about $30, so it's a cheap first try at a fix. Here's the part numbers for the o-ring kit:

IPR O-Ring Kit (for when IPR valve replacement is not required)
(Ford) F6TZ-9C977-AA
(International) 1825806C92

Cheers!

[1996powerst0ke]

Alright that's what I was thinking. I'm getting it hooked up to a scanner Monday to see if anything shows up. It's gotten worse the last few days and seems to be doing it cold now and it fires at first then just cranks and sometimes it runs for like 5 seconds then dies. I was wondering if it might be electrical. Any thoughts?

[1996powerst0ke]

Another question is if it's the o rings would it just randomly die like it is? I figured once it's warm it would lose pressure and not run/start at all. It does it at very random times.
Thanks in advance.

[Chop]

Have you replaced the Cps yet ? It's a common issue and relatively cheap .

[JJFLASH]

x2 always start with a new CPS. And no, tach bounce doesn't mean that it is working properly lol.

Yeah bad IPR o-rings will do that. There are other things that could cause it too. As far as electrical...well UVCH problems are super common but don't usually have symptoms like ur describing. Nothing saying pulling your VCs and inspecting them would hurt but personally I would try a new CPS first off, get it scanned and go from there with attention to the IPR o-rings.

[1996powerst0ke]

Got it fixed. Cps was the problem. Quick question the little gold thing attached to the sensor, how close to the harmonic balancer does it have to be?

[JJFLASH]

It can only go on one way properly and it's not adjustable. Just make sure the sensor is fully seated in the clip. Glad you got 'er fixed

[1996powerst0ke]

Now that it's runnin right I'm fallin in love with it I did the custom "Tymar" intake and now I'm gonna do exhaust and tunes can't wait! But one more question... I have the e4od and I'm on a budget so is there anything I can do to make it hold up at least for a while. I'm not tryin to make crazy power but I want to make sure my tranny can handle a bit more then stock. Oh and the truck has 101k miles if that means anything

[JJFLASH]

Have you found any of the OBS specific threads? Post your trans questions (and any others) here. Will get much better results

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