Well I got my injectors in and I'm still seeing the IPR at 0%. The Idle pressure is around 500 and the highest pressure I saw was around 2500. The truck now starts at 32 degrees no problem.
The IPR % is still buggging me. After some research I found this.
IPR with low duty cycle (less than 8% @ idle)
and engine running, indicates a restriction in the drain circuit. This
restriction is taking the place of the IPR valve, driving the IPR duty
cycle lower, with higher than expected ICP. The excess restriction
will be in the
reservoir, front cover, stuck IPR valve, or debris
above the edge filter. The drain path through the reservoir and
front cover can be visually verified. Typically the pump or IPR
must be replaced to repair this concern. Do not replace both components
at the same time.
This often occurs after the oil pan is resealed where excess sealant
is forced through the lube system (short circuit check valve) and
trapped at the edge filter of the high pressure pump
I'm hoping that I don't have to replace the HPOP and IPR to repair. I'm hoping to try and find the restriction.
Does anyone know how to remove the edge filter? I'm thinking that is where my problem is. Besides I should be able to verify the rest of the stuff before I get to the edge filter.
Thanks Again
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97 Ford F250 4x4 Extra Cab Longbed Power Stroke (no mods) Front tow hitch, rebuilt E4OD at 162,000
Truck is up to 193,000 and counting as of 11-14-09
member Kansas Diesel had this issue & it ended up being the pump ...
I was looking for the thread for another member , but most of what we did(for Kansas) we did for in PM"S & Email, & IIRC it was in the old site format, so I may not be able to post a link ...
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Rick.....
97 F 350 ...Lucky 13 "Most stuff's just stuck & needs hittin with a hammer"....
Quote:
Most people come here for the facts ...not a hug ...
Does the IPR % go to 14 or so when you turn the key on without starting the engine? If that's the case, then the electronic side is OK. If it never goes to 14%, then it would indicate a problem on the PCM side of the system.
From reading on page 4 of http://www.thedieselstop.com/faq/949...iagnostics.pdf, I'd think a guy may be able to backflush the debris out of the HPOP after removing it. I'm wondering if the edge filter is installed behind the "unserviceable" plug on the bottom of the HPOP. It would at least be worth a try before dropping a bunch of money on a replacement HPOP, unless you are inclined to go with an upgraded pump like Bob Riley's Adrenaline.
I would love it if someone could tell us where the stinking "edge filter " is , it seems to be a well guarded secret . Maybe I should post where I think it is ,so someone can jump all over me to prove how wrong I am ....
__________________
Rick.....
97 F 350 ...Lucky 13 "Most stuff's just stuck & needs hittin with a hammer"....
Quote:
Most people come here for the facts ...not a hug ...
Some folks say that the edge filter is merely a sharp corner on the IPR.
The Ford coffee-table book has a picture with an arrow pointing to it.
__________________
'94 F250 supercab 4x4, original owner, 4.10LS, DIY elec fuel, Tymar air intake, Adrenaline HPOP, Beans tunes on 4 position VA chip, VDO gauges (boost,pyro, outside temp), Ford digital AIC, DPPI downpipe, gutted EBPV and turbo pedestal mod, Con OFE clutch, add-a-leafs front and rear, Monroe Reflex shocks, Milemarker 449SS hubs, towing 25' Mallard travel trailer
coming soon: 6.0 IC
Last edited by nashvillebill; 10-30-2009 at 07:09 PM.
__________________
'94 F250 supercab 4x4, original owner, 4.10LS, DIY elec fuel, Tymar air intake, Adrenaline HPOP, Beans tunes on 4 position VA chip, VDO gauges (boost,pyro, outside temp), Ford digital AIC, DPPI downpipe, gutted EBPV and turbo pedestal mod, Con OFE clutch, add-a-leafs front and rear, Monroe Reflex shocks, Milemarker 449SS hubs, towing 25' Mallard travel trailer
Does the IPR % go to 14 or so when you turn the key on without starting the engine?
Just got to checking now. When the key in on engine off the IPR % is .1%. So maybe I'm barking up the wrong tree. For the fun of it I hooked up my extra ICP sensor leaving it out of the oil stream. When I cranked it (obviously it did not start) the IPR% went to .5%.
I'm assuming that because the IPR is a two wire actuator it does not report what position it is in back to the PCM. So that kind of rules out a stuck IPR.
Maybe you are on to something.
I ran across another number on my scan tool that seems strange
Vref v 2.49
Sounds like this is reference voltage for the sensors. Is this a good number?
I work on boats and our efi sensors use a 5 volt reference. So if the reference was messed up all of the readings would be out of whack.
Quote:
I would love it if someone could tell us where the stinking "edge filter " is
As the link above to dieselsite shows(at least it appears) the edge filter is a seperate component than the IPR although maybe the IPR has an additional edge filter.
I was just hoping to find out what hole it comes out of the HPOP. It may be behind the "unserviceable plug" but I was looking for a more concrete answer.Maybe the guys at dieselsite can shed some light on this.
Thanks for the help and great discussion
__________________
97 Ford F250 4x4 Extra Cab Longbed Power Stroke (no mods) Front tow hitch, rebuilt E4OD at 162,000
Truck is up to 193,000 and counting as of 11-14-09
Last edited by 4stroke; 10-30-2009 at 11:35 PM.
Reason: link not working
As was mentioned previously, The edge filter was originally in the (at the end of) the IPR on the early trucks (94-early 95) and was moved to the pump. No additional edge filter on the IPR on the later ones. Cheers!
I'm hoping my problem exists in my HPOP. I'll try to get into it in the next few weeks
Thanks again
__________________
97 Ford F250 4x4 Extra Cab Longbed Power Stroke (no mods) Front tow hitch, rebuilt E4OD at 162,000
Truck is up to 193,000 and counting as of 11-14-09
Just got to checking now. When the key in on engine off the IPR % is .1%. So maybe I'm barking up the wrong tree. For the fun of it I hooked up my extra ICP sensor leaving it out of the oil stream. When I cranked it (obviously it did not start) the IPR% went to .5%.
I'm assuming that because the IPR is a two wire actuator it does not report what position it is in back to the PCM. So that kind of rules out a stuck IPR.
Maybe you are on to something.
The IPR % is a signal that the PCM sends to the IPR, in the form of a pulsed 12V signal. the % is how much on-time the signal sends to the IPR coil, which provides no feedback except thru the ICP sensor when it regulates the pressure to the heads. So if you're only getting .5% with KOEO, then something's wrong on the electronic side.
Quote:
Originally Posted by 4stroke
I ran across another number on my scan tool that seems strange
Vref v 2.49
Sounds like this is reference voltage for the sensors. Is this a good number?
I work on boats and our efi sensors use a 5 volt reference. So if the reference was messed up all of the readings would be out of whack.
Vref should be right at 5 V, so that could be your problem. Possibly the PCM is bad, as that's where the Vref signal comes from. Do you have access to another PCM to try?
You can also put 12V across the IPR coil (don't do it for very long to avoid burning up the coil), which should drive the valve closed and make the HPOP put out max pressure. That would tell you if the IPR itself is working.
But from the readings you got, I think your problem is on the electric side.
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