ICP/IPR Readings
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 31
Likes: 0
From: Fairbanks, Alaska
ICP/IPR Readings
I'm slowly working my way through a no start issue on a 2003 F-350.
Using a Scangauge II I'm getting the following readings for ICP and IPR:
Initial Key on the IPR reads 14.4 %, as soon as I start cranking the engine over I get a steady reading of 77% the whole time I'm cranking. While cranking the ICP reading fluctuates between 150 psi and 350 psi occasionally bouncing over 500 briefly and then dropping back down to between 150 and 350.
If I understand correctly you need a minimum of 500 psi in order for the engine to start. I'm not sure what the correct IPR value should be and where I should start looking for my hpo problem.
IIRC from reading previous posts the 03 doesn't have the STC fittings but the hpop itself is a weak point.
Should my next step be an air pressure test, pull the IPR and inspect, or start shopping for an hpop. If I need to do the air test what is the easiest way to do this with the ICP in the back under the turbo?
Thanks for any advice
Using a Scangauge II I'm getting the following readings for ICP and IPR:
Initial Key on the IPR reads 14.4 %, as soon as I start cranking the engine over I get a steady reading of 77% the whole time I'm cranking. While cranking the ICP reading fluctuates between 150 psi and 350 psi occasionally bouncing over 500 briefly and then dropping back down to between 150 and 350.
If I understand correctly you need a minimum of 500 psi in order for the engine to start. I'm not sure what the correct IPR value should be and where I should start looking for my hpo problem.
IIRC from reading previous posts the 03 doesn't have the STC fittings but the hpop itself is a weak point.
Should my next step be an air pressure test, pull the IPR and inspect, or start shopping for an hpop. If I need to do the air test what is the easiest way to do this with the ICP in the back under the turbo?
Thanks for any advice
Senior User
Joined: Jan 2005
Posts: 373
Likes: 2
From: Alberta, Canada
Bump for you.
Have you checked your FICM voltages yet?
One of the first things I'd be checking, and it doesn't cost anything. Just a few mins and a buddy to turn the key for you.
P.S. ya your right about the STC on an 03, it doesn't have it.
Have you checked your FICM voltages yet?
One of the first things I'd be checking, and it doesn't cost anything. Just a few mins and a buddy to turn the key for you.
P.S. ya your right about the STC on an 03, it doesn't have it.
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 31
Likes: 0
From: Fairbanks, Alaska
Yes, I checked voltages and had 47+ volts except for a brief reading of 42v during cranking that went right back up to 47+. I had forgotten to unhook the glowplug power for the test. I reflowed the solder as described in the tech folder and retested. Had 48v throughout the entire test but had glowplugs unhooked as I should have during the first test. At any rate I'm not positive the ficm is good because the voltage test isn't definitive, but I am pretty sure I do have a hpo problem due to the ICP reading.
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 31
Likes: 0
From: Fairbanks, Alaska
I did try unplugging the ICP sensor, in fact through most of the troubleshooting and repair process ( I have found other issues that I have fixed along the way ) I left it unplugged. Still no fire. I'm not convinced I don't have other problems such as FICM, but I need to get the hpo up where it belongs before I continue elsewhere. Any input on what the correct IPR reading should be, and the best way to do the air pressure test on an 03? Thanks
Trending Topics
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 31
Likes: 0
From: Fairbanks, Alaska
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
ipr should be at 84% while cranking. it may be default of 77% do to the icp being disconnected.
03 enignes are tested in the same fashion as the 7.3 using block off tools to dead head the pump at each bank.
you block off one bank and test then the other bank, then both banks.
03 enignes are tested in the same fashion as the 7.3 using block off tools to dead head the pump at each bank.
you block off one bank and test then the other bank, then both banks.
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 31
Likes: 0
From: Fairbanks, Alaska
The 77% reading is with the ICP sensor connected. Is the 7% difference enough enough to cause the low pressure I'm getting? Should I pull the IPR and inspect or do the air pressure test next?
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
with out the truck in front of me I would not even try and guess why your are reading 77%. it should be reading 84% while cranking. that could be an issue with your scan tool as well.
Pulling the ipr out is easy enugh to do. It wont hurt to have a look at it.
Pulling the ipr out is easy enugh to do. It wont hurt to have a look at it.
Thread
Thread Starter
Forum
Replies
Last Post
piken
6.0L Power Stroke Diesel
17
Apr 17, 2016 06:23 PM
millwrightbrian
6.0L Power Stroke Diesel
5
Feb 18, 2015 03:27 AM
Racecarhauler
6.0L Power Stroke Diesel
20
Oct 20, 2009 01:41 AM
