Need help 1999 won't start
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New User
Joined: Nov 2003
Posts: 16
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From: CALI.
Need help 1999 won't start
Truck cranks wont start. Fuses and relays good,New motorcraft;IPR,ICP with pigtails,new T500 hpop,new 180/80 Injectors,push rods,910 valve springs,Mellings lpop.motorcraft oil cooler.
Reservoir full, oil new 15-40w Amsoil,rails full,fuel bowl full and clean,hpop drive gear rechecked and torqued.
RPM 180
Temp oil 88*
ICP duty cycle koeo 14.8, crank 64.85
ICP pressure 250 -450psi
ICP voltage .27-.50
Manual gauge on oil rail 250 -450psi when cranking
Inj pulse width .0005,
Buzz test was good
Vref 5v all sensors. 12v at IPR w/koeo
Fuel pressure 58psi
Air test hpop hear no leaks with stethoscope.
DTC codes; p1280,p0380
Also put straight edge across injectors to double check they were seated.
Reservoir full, oil new 15-40w Amsoil,rails full,fuel bowl full and clean,hpop drive gear rechecked and torqued.
RPM 180
Temp oil 88*
ICP duty cycle koeo 14.8, crank 64.85
ICP pressure 250 -450psi
ICP voltage .27-.50
Manual gauge on oil rail 250 -450psi when cranking
Inj pulse width .0005,
Buzz test was good
Vref 5v all sensors. 12v at IPR w/koeo
Fuel pressure 58psi
Air test hpop hear no leaks with stethoscope.
DTC codes; p1280,p0380
Also put straight edge across injectors to double check they were seated.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,812
Likes: 1,335
From: Elk Grove, CA
Not building enough ICP, I think the PCM needs to see 500 before it fires the injectors. Pull wire from ICP sensor so PCM goes to default value.
Or hanging IPR allowing pressure to bleed off.
FIPW is not getting reported correctly. Maybe just units are off.
What tunes are you running? Chip on the PCM seated ok?
Or hanging IPR allowing pressure to bleed off.
FIPW is not getting reported correctly. Maybe just units are off.
What tunes are you running? Chip on the PCM seated ok?
Elder User
Joined: Sep 2011
Posts: 979
Likes: 4
From: Vancouver
With those new injectors, you should be able to put a pressure test on each head at the high pressure oil connection to confirm no leak down past your o-rings. This test allows you to eliminate the o-rings and injectors as the problem. The injector solenoid valves should hold pressure. You could have a rolled o-ring, a bad injector with a stuck solenoid valve (spring pressure closes the valve).
Please continue to let us know how you are doing, so that further comments from the very helpful and knowledgeable members here can help you. Don't give up!
Larry
Please continue to let us know how you are doing, so that further comments from the very helpful and knowledgeable members here can help you. Don't give up!
Larry
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New User
Joined: Nov 2003
Posts: 16
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From: CALI.
I put 100psi of air at the hpop. I did this by using a ipr air fitting. I couldn't hear any air leaking with a stethoscope. I'm going to do it again with the valve covers off. I'll post tomorrow after I try that.
Retired guy fixn stuff
Joined: Mar 2009
Posts: 3,220
Likes: 1,230
From: East TN
I would check the IPR. We fought similar stuff. Newer ipr was stuck.
Replaced with a spare older one died right up. IPR was stuck open.
I posted on it a while back. I will see if I can find it.
Replaced with a spare older one died right up. IPR was stuck open.
I posted on it a while back. I will see if I can find it.
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New User
Joined: Nov 2003
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From: CALI.
I've tried 3 different IPR valves. The one I have now is a brand new motorcraft. I bench tested it by putting air on it and then applying 12v momentary and the valve opened and closed on command.
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New User
Joined: Nov 2003
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From: CALI.
I dead headed the pump last week. Had no pressure at the pump. Sent the pump back to terminator to have Joey test it. He says pump is working perfectly. Should have it back today. I put another pump on and only built 250-450 psi at the head. Haven't tried dead heading that pump at the pump.. Waiting to get the t500 back today. I will put that on then air test the system with ipr fitting and valve covers removed. I appreciate all advice. This has been a one year process. Hopefully I get this figured out soon. Already cancelled my vacation. Bought a new tacoma to get back and forth to work
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
I am attaching a link to a post from JenC of Diesel Site. There is an interesting bit of information on testing the HPOP using air:
https://www.ford-trucks.com/forums/1...l#post17270486
My takeaway from the post is to "not" pressurize the pump using air.
When conducting the "Cody Test" to make sure that the injector o-rings are sealing properly, which is what it appears that you are trying to do, isolate and ONLY pressurize each head individually at the high pressure oil fitting hole that services the oil rail, as Larry stated above.
FWIW, the pump in that thread is also a T500.
https://www.ford-trucks.com/forums/1...l#post17270486
My takeaway from the post is to "not" pressurize the pump using air.
When conducting the "Cody Test" to make sure that the injector o-rings are sealing properly, which is what it appears that you are trying to do, isolate and ONLY pressurize each head individually at the high pressure oil fitting hole that services the oil rail, as Larry stated above.
FWIW, the pump in that thread is also a T500.
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New User
Joined: Nov 2003
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From: CALI.
Heres what I was using to do the air test. Not sure if that what JenC was referring to by blowing out dust. But I am going to test the air at each head. Just waiting to get my pump back from Joey.
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