Here we go again....
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
My understanding, I am no pro by anymeans, is if the sceen is dirty or tore, it is shot and should be replaced! Maybe Cheezit, Nccpartsman, Mchan, or Bismic or...... will pick up on this! Maybe PM one of thes fella's!
Logistics Pro
Joined: Nov 2010
Posts: 3,673
Likes: 6
Yes a bad ipr will cause a low oil pressure problem.
I'm not sure if there is a way to test it, but if the screen is damaged I would replace it anyways. It could fix it. And you will get a piece of mind.
I would order one from eBay. About 1/3 less then the dealer.
I'm not sure if there is a way to test it, but if the screen is damaged I would replace it anyways. It could fix it. And you will get a piece of mind.
I would order one from eBay. About 1/3 less then the dealer.
Thread Starter
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Junior User
Joined: Dec 2009
Posts: 88
Likes: 0
Thanks guys. I guess what I'm basically asking is...lets say this IPR is bad..would/could that cause the truck to not start all of a sudden, show low ICP voltage, and not move the gauge on the dash while cranking ? 
Logistics Pro
Joined: Nov 2010
Posts: 3,673
Likes: 6
I'm not sure what test your doing? Checking voltage to the icp while cranking I would assume.
I know it would cause a no start. It happened to me. Truck was running great. Parked it went to start it up again and blah nothing
I know it would cause a no start. It happened to me. Truck was running great. Parked it went to start it up again and blah nothing
Posting Guru
Joined: Oct 2010
Posts: 1,192
Likes: 0
From: Kerrville, Tx
if the IPR is bad then IIRC the truck wont start. then again why is the truck 8 quarts low? was it not filled up all the way or is it leaking out or is the motor eating it. this can be a problem if the motor is eating it
Fleet Owner
Joined: Nov 2003
Posts: 27,890
Likes: 3,610
Determine the reason for the EXTREMELY low oil level and replace the IPR valve.
I assume that you filled it up properly the last time the oil was changed (how many miles ago was this btw?). I also assume you have not seen any large oil puddles on the ground or any seriously "oil coated areas" of the engine or undercarriage. If that is all the case, I would pull the downpipe and look for oil there.
Have you been experiencing any significant exhaust smoke?
I assume that you filled it up properly the last time the oil was changed (how many miles ago was this btw?). I also assume you have not seen any large oil puddles on the ground or any seriously "oil coated areas" of the engine or undercarriage. If that is all the case, I would pull the downpipe and look for oil there.
Have you been experiencing any significant exhaust smoke?
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Junior User
Joined: Dec 2009
Posts: 88
Likes: 0
Truck was 6 quarts low after checking again (sorry). I'm really tired from working on this. Anyways, like I said earlier...i'll take the blame for the low oil. I bought the truck a month ago, and the seller said he just had the oil changed (proof by the sticker on the windshield), and I'm trained to always visually monitor my dash gauges. The dummy gauge on the dash was ALWAYS in the perfect zone, and I never checked it manually (my fault) because the oil was justed changed. I have no leaks at all on my concrete driveway...and the truck burns no oil visually. I'm going to assume whoever filled it up didnt realise how much these things hold...lol. Anyway, I'm going to get a new IPR tomorrow and see if that is the culprit. I'll tell you what...I'm new to this diesel thing, and it has humbled me QUICKLY. 
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Junior User
Joined: Dec 2009
Posts: 88
Likes: 0
Oh...and dont forget...the truck ran fine right up until I shut it off. It even fired on carb cleaner. Then, wouldnt fire at all. Thats where I am now...and showing .26 volts (ICP) while cranking. I'm praying that its the IPR.
Posting Guru
Joined: Apr 2008
Posts: 2,392
Likes: 1
From: Green Lane, Pa.
Once you do get it running the first thing you want to do is drain the oil as if the previous owner may not even have put diesel oil in it. Also change the filter and use OEM replacement.
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Junior User
Joined: Dec 2009
Posts: 88
Likes: 0
UPDATE:
I changed the IPR with a new one from ford. What a pain in the ***** that was !! I have big hands...and they just didnt wanna fit back there...lol. Anyways, I put everything back together..turned it over...AND IT FIRED !!!! I then reset the key...waited for the glow plug light to go out, and it started right up !!!!! Now, heres the big question...at high idle, with 15W 40 oil in it and about 45* F outside....what should my ICP voltage be ? I have no other way to monitor it right now.
Thanks to everyone who jumped in on this adventure.
I changed the IPR with a new one from ford. What a pain in the ***** that was !! I have big hands...and they just didnt wanna fit back there...lol. Anyways, I put everything back together..turned it over...AND IT FIRED !!!! I then reset the key...waited for the glow plug light to go out, and it started right up !!!!! Now, heres the big question...at high idle, with 15W 40 oil in it and about 45* F outside....what should my ICP voltage be ? I have no other way to monitor it right now.
Thanks to everyone who jumped in on this adventure.
