ok now what?
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Thread Starter
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Junior User
Joined: Jul 2016
Posts: 88
Likes: 0
**** UPDATE *****
ok so now that I am using this Torque Pro app. I noticed that I have another problem, as a matter of fact I was just stranded at dinner. well not really but had to sit there 45 minutes and she finally started.
I unplugged the ICP and it did not start but was oily.
I thought my fuel pressure regulator was clogged up so I drained it
Then I noticed what seems to be an issue.
MY FUEL PRESSURE read 0 PSI.
I was able to drive it back home once started about 10 miles.
ok so what are the steps to diagnose and fix this issue? I hope its not a weak fuel pump but I am prepared if it is.
I am going to try the following to see if it fixes my issue
http://www.fordtruckzone.com/threads...iesels.656226/
Thanks
ok so now that I am using this Torque Pro app. I noticed that I have another problem, as a matter of fact I was just stranded at dinner. well not really but had to sit there 45 minutes and she finally started.
I unplugged the ICP and it did not start but was oily.
I thought my fuel pressure regulator was clogged up so I drained it
Then I noticed what seems to be an issue.
MY FUEL PRESSURE read 0 PSI.
I was able to drive it back home once started about 10 miles.
ok so what are the steps to diagnose and fix this issue? I hope its not a weak fuel pump but I am prepared if it is.
I am going to try the following to see if it fixes my issue
http://www.fordtruckzone.com/threads...iesels.656226/
Thanks
Logistics Pro
Joined: Aug 2009
Posts: 3,609
Likes: 324
From: Arizona
OK you can't read fuel pressure on the 7.3 with any scanner, there is no FP sensor on these engines and the PCM does not know what the FP is. FP has to be read with a manually installed gauge.
If you had no FP, you wouldn't be able to start or drive it.
You also cannot read engine coolant temp with a scanner unless you have a manual transmission.
If you had no FP, you wouldn't be able to start or drive it.
You also cannot read engine coolant temp with a scanner unless you have a manual transmission.
Thread Starter
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Junior User
Joined: Jul 2016
Posts: 88
Likes: 0
Ok I will construct or purchase a Fuel Pressure gauge and manually check the pressure.
Also, I am wondering if I may have failing o rings on a Injector (s) that is why it starts when cool but if is hot it wont start?
thoughts? My problem with this theory is that my IPR was not even close to 65%, not even while running.
Also, I am wondering if I may have failing o rings on a Injector (s) that is why it starts when cool but if is hot it wont start?
thoughts? My problem with this theory is that my IPR was not even close to 65%, not even while running.
Laughing Gas
Joined: Aug 2014
Posts: 1,020
Likes: 9
From: Washington State
Get Rid of Fuel Pressure, Your Map reading isn't working for some reason and everything else seems pretty good. That's at idle right?
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Senior User
Joined: Sep 2012
Posts: 208
Likes: 0
From: Oklahoma
You can try a few things to confirm. When it's hot and won't start, use something like a can of air duster held upside-down to spray the Solenoid. It'll basically freeze it.
Something like brake clean would probably work.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I shared the link to the 2016 PIDs - it explains the settings and readings you can expect. 40% IPR is good for WOT. If you log your data while you drive, you can share the log here and we might be able to spot the issue.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,809
Likes: 1,334
From: Elk Grove, CA
ICP is the sensor that reads high oil pressure, #13 below. IPR is the solenoid that regulates the pressure, #21. Here's a helpful pic of the landscape. Don't worry, the learning curve for the lingo is steep, we all went thru that. 
It's a Van Gogh
Joined: Feb 2010
Posts: 7,809
Likes: 1,334
From: Elk Grove, CA
If it's leaking oil, it is dying and should be replaced. You can try to clean it and struggle along, but that just postpones the inevitable. OEM only since a lot of the cheapo Fleabay items have issues.
As mentioned above if it consistently will not start when hot, try cooling the IPR. Big gulp of ice works for that. If that fixes it you need an IPR too.
As mentioned above if it consistently will not start when hot, try cooling the IPR. Big gulp of ice works for that. If that fixes it you need an IPR too.
Postmaster
Joined: Nov 2003
Posts: 3,595
Likes: 0
From: Utah County, UT
Two years ago mine just up and died. Long story short. The insulation in the IPR wires just inside the loom totally fell apart shorting the solenoid and thus no go, the nut and these wires are easy checks. I don't recall if you stated anything about the nut
https://www.ford-trucks.com/forums/1...l#post14566681
https://www.ford-trucks.com/forums/1...l#post14566681