02 Hot No Start

Northwoods2002 · Aug 18, 2015

I've done the searching, but want to double check my plan of action before digging into it. 2002/F250 320k miles on 7.3/4r100. Truck will start when cold, or sitting longer than an hour or two. Running it 1/2mile down the road to fuel up, if you shut it off it won't restart, you have to let it cool down again. Problem started last week. No distingushable smoke while cranking but can hear fuel pump running. Things that have been done over the past 6-8 months whether routine or not:
New batteries
Fuel bowl, hpop, IPR, turbo all rebuilt
New valve cover gaskets
New starter

Things done since issue arose:
New cps (didn't have a spare anyways)
IPR resealed (internal oring was damaged)
Fresh oil change with valveoline blue.

I do not have the ability to look at Pids so I am assuming my next course of action will be to remove valve covers and (hopefully?) Find the Injector(s) that are leaking oil? Any other suggestions? I have a buddy I could take it two to look at Pids, but I'm not sure if it will make the 30min drive as the last time it happened I was actually going down the street and it just died...

79jasper · Aug 18, 2015

I would just get the orings and go for it.

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Northwoods2002 · Aug 18, 2015

I have the covers off and engine running. No leaks are apparent. Think I'm going to put covers back on and take it to my buddies to use scan tool. I'd do rings, but with 320k on what I assume are stock injectors (I'm 4th owner) I might as well do injectors but don't have the $$$ right now...

79jasper · Aug 18, 2015

Yeah, but if orings keep it on the road until you can afford injectors.....

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David N · Aug 18, 2015

Sounds like what mine is doing. Im leaning towards injector orings but mine only have about 5k miles on them...

Either that or the low pressure oil pump is going bad.

Northwoods2002 · Aug 19, 2015

So I did not take it to my buddies as it stalled as soon as the engine was hot. Everything kept me thinking back to the IPR so I performed a little experiment. I removed the solenoid from the ipr, that was extremely hot from being on the engine, and hooked it up to a multimeter set to do a continuity check. In the video you'll see that while hot the solenoid has no continuity but once it cools off enough it regains continuity. So while im able to start a cold engine, as soon as the engine warms up, the solenoid gets heat-soaked and fails.

P.S. the voice you hear is my 72 year old father that didnt understand exactly what I was doing.

https://youtu.be/_Gq8R8nblzE

Ordered a new IPR from my work and will install it tomorrow.

79jasper · Aug 19, 2015

My brothers truck did that. What brand was the old IPR?

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Northwoods2002 · Aug 19, 2015

Don't know, I'm the 4th owner And its the one that was in there when I bought it. I just picked up the Standard Parts IPR, took the solenoid off and put it on the IPR in the truck and its running, hasn't stalled yet. I'll leave the Standard Parts IPR in the truck as a spare.

79jasper · Aug 19, 2015

In the first post you said it had a new IPR, so I just figured you were the one that changed it. Lol
Probably a cheap parts store brand. Aka chinesium.

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Justin@DP-Tuner · Aug 19, 2015

If the IPR doesn't fix it, remove your fuel bowl cap and see if you have oil in the fuel. If you do, you can bet on it being an injector o-ring problem.

Northwoods2002 · Aug 19, 2015

Jasper that should have been IPR orings, my typo!

No oil in the fuel Justin, its run all day with no issues on the new IPR solenoid.

79jasper · Aug 19, 2015

Oh. Lol
Yeah, it seems it's either the orings or the solenoid. The rest can get sludge in it, but that's about it.

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Justin@DP-Tuner · Aug 24, 2015

Northwoods2002 said:
Jasper that should have been IPR orings, my typo!

No oil in the fuel Justin, its run all day with no issues on the new IPR solenoid.

Okay, then I would agree your problem was IPR related. Sounds like you got lucky with an easy fix.

mandkole · Aug 24, 2015

You likely got it fixed, but check your wiring to the IPR and IPR plug as well.

BS Hauler · Aug 25, 2015

My 02 did that at about 65,000 miles. It would start just fine and you might drive it 5 miles or 20 miles and it would just shut itself off. You could crank on it all you wanted and it would not fire. If you let it sit for about an hour it would start right back up. The solenoid was going bad.

Northwoods2002 · Aug 29, 2015

Yes, it was the solenoid. I have the rest of the new one in my glove box. It's been doing great, has had more power as well! However, I have noticed that once and a while, I start it and runs great for about 2-3 min and then it hiccups, just once, and then it's fine for the rest of the day. I may put my old cps back in and see if that clears the problem up...

Arisley · Aug 29, 2015

Replace the rest of the IPR first.

Keep the old one for a spare. Glad the solenoid fixed it.

Northwoods2002 · Sep 18, 2015

Sorry for the late update, but kind of forgot till I saw another similar thread posted.

Truck runs fine. I still haven't put the rest of the new IPR in, but it also hasn't hiccuped or stalled since so I'm thinking maybe there was air in the HPOP lines?

Thanks for the help guys, I'm sure I'll be asking a few more questions when its time for Injectors (321k on stock injectors as far as I know)!