High HPOP Pressure - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 06-17-2013, 02:24 PM Thread Starter
Compression Ignition Addict
 
Join Date: Apr 2012
Posts: 205
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
High HPOP Pressure

Ok hope someone might be able to help me out. I just put a Stealth SRP 1.1 HPOP pump on my truck (because old one only maintained 2400psi at WOT).
The pump works great.

All throttle positions appear to be fine looking at my gauge and how it acts.

However, when at WOT it goes to 4000psi and maintains 4000psi without dropping a bit.

It has a fairly new ford ipr and icp sensor (2 months old). I installed a new backpressure sensor when I swapped the pump.

Does someone know why it would maintain 4000 psi now?

Thanks,
Ben

00 Excursion 7.3 (1.0 Ex. hsng., 3.5" downpipe, Aero Muffler, Banks WG, Banks Comp. Wheel, AFE Stage 2 Air intake, HPX, IAH delete, DP- Tuner F6, Riffraff Boost Fooler, Melling Oil Pump), Fuel lab 41402 pump and regulator, fuel bowl delete, 910 Comp Springs/Shims, DI Pushrods, Swamps HVHF IDM, SRP 1.1 HPOP Dieselsite trans and coolant filter, 203* thermostat, Sonnax valve 0.427 and tricumulator springs, Lift, MM Hubs, 35's and 3.73s, 08 diff cover, Hellwig rr. bar
326RWHP @ 731RWTQ.
572ysc is offline  
post #2 of 6 Old 06-17-2013, 08:55 PM
Serving Our Country!
 
JSchuricht's Avatar
 
Join Date: Aug 2007
Location: Manor, TX
Posts: 2,967
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 25 Times in 24 Posts
Feedback Score: 2 reviews
4000 PSI is really high for most setups. What tunes are you running and do you have a 10k mod installed?

JSchuricht is offline  
post #3 of 6 Old 06-18-2013, 03:12 AM Thread Starter
Compression Ignition Addict
 
Join Date: Apr 2012
Posts: 205
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I'm running dp tunes also as far as I know there is no 10k mod installed. How would I check if there is to be certain? I didn't see a resistor in the connector wiring close to the sensor. Just weird that it is only doing it at wot when fully warm. Was thinking that it might be a bad oil temp sensor

00 Excursion 7.3 (1.0 Ex. hsng., 3.5" downpipe, Aero Muffler, Banks WG, Banks Comp. Wheel, AFE Stage 2 Air intake, HPX, IAH delete, DP- Tuner F6, Riffraff Boost Fooler, Melling Oil Pump), Fuel lab 41402 pump and regulator, fuel bowl delete, 910 Comp Springs/Shims, DI Pushrods, Swamps HVHF IDM, SRP 1.1 HPOP Dieselsite trans and coolant filter, 203* thermostat, Sonnax valve 0.427 and tricumulator springs, Lift, MM Hubs, 35's and 3.73s, 08 diff cover, Hellwig rr. bar
326RWHP @ 731RWTQ.
572ysc is offline  
post #4 of 6 Old 06-18-2013, 02:16 PM
Serving Our Country!
 
JSchuricht's Avatar
 
Join Date: Aug 2007
Location: Manor, TX
Posts: 2,967
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 25 Times in 24 Posts
Feedback Score: 2 reviews
It's probably not a 10k mod. I didn't quite think that one through, it makes ICP look lower so the IPR forces more pressure but your reading would still be low. I am guessing your running some sort of gauge tapped into the ICP sensor, do you know anyone with a scanner so you can compare what your gauge is reading, also get duty cycle. Aside from that, I would pull the chip just to make sure Jody didn't program your tunes for high ICP.

JSchuricht is offline  
post #5 of 6 Old 06-18-2013, 03:34 PM
Premium Member
 
Macon's Avatar
 
Join Date: Jun 2012
Posts: 3,804
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 3
Thanked 22 Times in 22 Posts
Feedback Score: 0 reviews
I know some HPOP's can require custom tunes, but it's looking that that is simply an aggressive stock pump. It could be enough to require a reburn, but I'd disconnect the batteries to make the PCM forget any learning it's done over the years, and let it start fresh.

Best bet is to contact DP and see what they have to say about it. I'm sure you're not the only customer to run that HPOP, so they should have some form of experience with it.

2002 F250 CCSB 4x4
PHP Phoenix, John Woods VB, NUC bypass, 6637

"No country can be called free which is governed by an absolute power;
and it matters not whether it be an absolute royal power or an absolute
legislative power, as the consequences will be the same to the people."

--Thomas Paine, Four Letters on Interesting Subjects, 1776
Macon is offline  
post #6 of 6 Old 06-18-2013, 03:49 PM
Serving Our Country!
 
JSchuricht's Avatar
 
Join Date: Aug 2007
Location: Manor, TX
Posts: 2,967
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 25 Times in 24 Posts
Feedback Score: 2 reviews
That's not at all how these trucks work. The PCM will look for a certain ICP depending on the tune and use the IPR to regulate that pressure. There is no learning for the ICP and a SRP isn't that aggressive of a pump, I happen to run one with DP tunes myself. You would have to step up to dual pumps before custom tuning is needed to control it and even then, some people do run high ICP.

JSchuricht is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome