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7.3 OBS PSD 94-97 PowerStroke Discussion |
06-02-2015, 06:22 PM
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#1
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Name: maxwedgehead
Title: Too Much Time
Status: Not Here
Join Date: Nov 2010
Location: West Plains, MO
Member`s Gallery
Posts: 850
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HELP Wont Start After IPR Reseal
Got a 94.5 7.3, truck isn't mine. Truck had a no start condition when warm. Replaced IPR o-rings, reinstalled, cranked on it several times, no luck. Replaced CPS, still no start, ohmed the coil on the IPR 10.6 so thats with in spec. Even hit it off ether a couple times and still won't run on its own, thinking stuck IPR valve but not for sure. Would like some comments or thoughts on what to look at next. Truck previously had new injector orings and glow plugs installed also.
__________________
15 Mega Cab Dually
03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71
08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc..
2009 CCSB 6.7L
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06-02-2015, 10:02 PM
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#2
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Name: maxwedgehead
Title: Too Much Time
Status: Not Here
Join Date: Nov 2010
Location: West Plains, MO
Member`s Gallery
Posts: 850
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Cranking fuel psi is 50, unplugged icp and no change. Thinking IPR is shot?
__________________
15 Mega Cab Dually
03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71
08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc..
2009 CCSB 6.7L
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06-03-2015, 10:36 AM
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#3
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Name: Pvmt-Pndr
Title: Diesel Enthusiast
Status: Not Here
Join Date: Apr 2015
Location: MI
Member`s Gallery
Posts: 177
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Sometimes after introducing air into the heui system it takes a good bit of cranking to get running again. Drive about 50 miles or so to get all the air back out
__________________
2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel
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06-03-2015, 10:44 AM
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#4
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Name: maxwedgehead
Title: Too Much Time
Status: Not Here
Join Date: Nov 2010
Location: West Plains, MO
Member`s Gallery
Posts: 850
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I've cranked on it way more than any other time I've ever pulled injectors on a 7.3, cranked on it this morning 5 times about 15-20 seconds a time
__________________
15 Mega Cab Dually
03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71
08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc..
2009 CCSB 6.7L
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06-03-2015, 10:48 AM
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#5
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Name: Pvmt-Pndr
Title: Diesel Enthusiast
Status: Not Here
Join Date: Apr 2015
Location: MI
Member`s Gallery
Posts: 177
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That should have done it then. Have you checked to see if you have oil at the top of the hpop through the plug? Engine oil is full I'm guessing
__________________
2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel
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06-03-2015, 10:51 AM
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#6
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Name: SDS97_7.3
Title: Too Much Time
Status: Not Here
Join Date: Feb 2011
Location: Finksburg, MD
Member`s Gallery
Posts: 960
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__________________
RIP Dex
KCCO
2008 F350 CCLB KR, MPD, No Limit
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06-03-2015, 10:54 AM
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#7
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Name: Pvmt-Pndr
Title: Diesel Enthusiast
Status: Not Here
Join Date: Apr 2015
Location: MI
Member`s Gallery
Posts: 177
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I highly recommend the torque app for a 7.3 owner. $5 for the app and $10 for the dongle if you have a smart phone. Unlike our dodges you can monitor almost everything on a 7.3 with it
__________________
2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel
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06-03-2015, 12:18 PM
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#8
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Name: maxwedgehead
Title: Too Much Time
Status: Not Here
Join Date: Nov 2010
Location: West Plains, MO
Member`s Gallery
Posts: 850
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No don't have a way to see ICP. Also getting zero smoke while cranking.
__________________
15 Mega Cab Dually
03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71
08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc..
2009 CCSB 6.7L
Last edited by maxwedgehead; 06-03-2015 at 12:19 PM.
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06-03-2015, 12:28 PM
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#9
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Name: Pvmt-Pndr
Title: Diesel Enthusiast
Status: Not Here
Join Date: Apr 2015
Location: MI
Member`s Gallery
Posts: 177
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Drain the fuel bowl, pull the filter make sure it's getting fuel. Should take roughly 8-12 seconds to fill the bowl up with fuel.
__________________
2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel
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06-03-2015, 02:18 PM
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#10
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Name: cityredneck
Title: Diesel Mechanic
Status: Not Here
Join Date: Sep 2009
Location: Blairsville, PA
Member`s Gallery
Posts: 393
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You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust
__________________
05 Purple CCSB 5.9
Fastest to date 10.11 @ 137
HP Tuning by Gordon @ Innovative
Exergy 150%, Industrial dual CP3's, Garrett GT4509R. Manual VB, Some nitrous and other goodies
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06-03-2015, 02:29 PM
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#11
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Name: SDS97_7.3
Title: Too Much Time
Status: Not Here
Join Date: Feb 2011
Location: Finksburg, MD
Member`s Gallery
Posts: 960
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Quote:
Originally Posted by cityredneck
You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust
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This is why I was asking^. Also as said before check to see if theres oil in the HPOP through the plug on top. How many volts are the batteries putting out?
__________________
RIP Dex
KCCO
2008 F350 CCLB KR, MPD, No Limit
Last edited by SDS97_7.3; 06-03-2015 at 02:32 PM.
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06-03-2015, 02:34 PM
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#12
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Name: powerstroke95
Title: Diesel Enthusiast
Status: Not Here
Join Date: Oct 2007
Location: INDIANA
Member`s Gallery
Posts: 140
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I had the same problem once. I had somehow broke the little tip off the needle inside the IPR. Still dont know how I managed to do that but I took the needle out of a spare IPR and it started right up.
__________________
2001 and 1995 Ferds
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06-03-2015, 02:43 PM
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#13
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Name: maxwedgehead
Title: Too Much Time
Status: Not Here
Join Date: Nov 2010
Location: West Plains, MO
Member`s Gallery
Posts: 850
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Quote:
Originally Posted by cityredneck
You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust
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unplugging the ICP should set a default and should fire if theres hpop pressure am i correct?
Quote:
Originally Posted by SDS97_7.3
This is why I was asking^. Also as said before check to see if theres oil in the HPOP through the plug on top. How many volts are the batteries putting out?
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Hpop is full of oil, never leaked off over night, batteries are new, also have a charger on them helping it
Quote:
Originally Posted by powerstroke95
I had the same problem once. I had somehow broke the little tip off the needle inside the IPR. Still dont know how I managed to do that but I took the needle out of a spare IPR and it started right up.
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Well I had someone turn the key off and on and could not hear the valve it self move with a stethoscope, currently looking for an ipr someone has to try that.
__________________
15 Mega Cab Dually
03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71
08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc..
2009 CCSB 6.7L
Last edited by maxwedgehead; 06-03-2015 at 02:45 PM.
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06-03-2015, 02:49 PM
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#14
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Name: cityredneck
Title: Diesel Mechanic
Status: Not Here
Join Date: Sep 2009
Location: Blairsville, PA
Member`s Gallery
Posts: 393
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You can also manually energize the ipr by grounding one side and putting 12volts to the other. Unplugging it does default it but on a 7.3 i have had them where it still wont fire. Sounds like you need to try another ipr. Also make sure your pigtail connection going into the ipr is good. Its super common for those to go bad. You can get just the end at any ford dealer
__________________
05 Purple CCSB 5.9
Fastest to date 10.11 @ 137
HP Tuning by Gordon @ Innovative
Exergy 150%, Industrial dual CP3's, Garrett GT4509R. Manual VB, Some nitrous and other goodies
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06-03-2015, 02:55 PM
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#15
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Name: SDS97_7.3
Title: Too Much Time
Status: Not Here
Join Date: Feb 2011
Location: Finksburg, MD
Member`s Gallery
Posts: 960
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Quote:
Originally Posted by maxwedgehead
unplugging the ICP should set a default and should fire if theres hpop pressure am i correct?
Hpop is full of oil, never leaked off over night, batteries are new, also have a charger on them helping it
Well I had someone turn the key off and on and could not hear the valve it self move with a stethoscope, currently looking for an ipr someone has to try that.
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Yes, if you unplug the ICP sensor it does set it to a default that the PCM sees. Well not necessarily, if the IPR is bleeding off too much from the HPOP you might not be getting enough to fire off. Ok good to hear that you have oil. If you have a load tester, test the batteries with the charger off, and then load test them and see what the voltage is. If it's not seeing a certain voltage, the truck will not fire. I cant remember the exact number for the life of me at the moment
__________________
RIP Dex
KCCO
2008 F350 CCLB KR, MPD, No Limit
Last edited by SDS97_7.3; 06-03-2015 at 02:58 PM.
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06-03-2015, 04:07 PM
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#16
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Name: Pvmt-Pndr
Title: Diesel Enthusiast
Status: Not Here
Join Date: Apr 2015
Location: MI
Member`s Gallery
Posts: 177
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Quote:
Originally Posted by cityredneck
You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust
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You're thinking 6.0 psd, 7.3s don't have a ficm
For $15 you can monitor almost everything
__________________
2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel
Last edited by Pvmt-Pndr; 06-03-2015 at 04:08 PM.
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06-03-2015, 08:05 PM
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#17
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Name: RDPsmoker
Title: OUT TO LUNCH..
Status: Not Here
Join Date: Nov 2010
Location: Casper or Laramie WY
Member`s Gallery
Posts: 1,815
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Quote:
Originally Posted by Pvmt-Pndr
You're thinking 6.0 psd, 7.3s don't have a ficm
For $15 you can monitor almost everything
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IDM close enough.....
__________________
-DUSTIN-
THANKS TO MAXTORQ
95 2500
-DPC
-SUNCOAST
03 3500
-Stock for now
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