To all the no start people looking for info... - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 25 (permalink) Old 09-06-2016, 10:08 PM Thread Starter
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To all the no start people looking for info...

Originally posted by Dave (Golfer) on PSN 01-20-2010 Thanks Dave

its nevvvvver the oil pump...seriously.

I see sooooooooooooooo many guys (dealerships included) that see "no ICP" or some ICP codes in a scantool...and toss HPOP's on truck after truck...when it is either an IPR or an injector (poppet valve) issue.

If you hook up the scantool, and monitor ICP (psi) while cranking...you'll see IPR% (duty cycle) climb & climb 15% key on..20, 30, 40, 55%, higher..the increase in IPR% means that the PCM is requesting ICP pressure to increase...

so ALSO watch ICP(psi) and if it comes up to only 180-250psi or so and stays there...then it's the IPR hung open (bypassing oil back to the oil pan through the front cover) such that only minimal psi can be made.

If the ICP is VERY low...like under 60psi...then it could be injector (poppets) pissing oil (under the VC's)..which is typical for injector with more than 180-200k miles.

if ICP climbs above 550-600..then it will probably climb much higher (15-1800+) and it is most likely going to be an electrical issue.

If his scantool will not connect then its a PCM or chip issue (remove the chip if you have one & haven't removed it yet)

if the scantool connects AND you have >600ICP then look at the datastream for a RPM reading.

if the scantool picks up an RPM signal and it seems accurate....then the CPS is good.

If no RPM on the scantool, replace CPS.

If you have RPM (on scantool, not just on dash)...AND have ICP >600, then run an (key on, eng off) injector "buzz test"...

the buzz test is nothing more than a continuity test from the PCM, through the IDM, and to & from each injector solenoid.

LISTEN to each inj buzz....do they all sound the same? nice & crisp?

if the test passes (and you audibly heard them all)...then wiring is good, IDM is good, HPOP is good...CPS is good...then it could be a fuel issue. gasoline, water, etc...

I wouldn't mention it if I haven't seen it myself numerous times...

any chance this no start began with 10-20miles after a fillup?
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post #2 of 25 (permalink) Old 09-06-2016, 10:09 PM Thread Starter
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Re: To all the no start people looking for info...

7.3L Powerstroke Starting Requirements:
Battery voltage a minimum of 10.5 volts while cranking
RPM at least 100 while cranking. If no tach movement suspect CPS
If you have a scan tool ICP should be 500 PSI 25 PSI and fuel
pulse width should be 1 to 6 milliseconds.

The above requirements assume the following:

Correct oil level, oil type and pressure
Correct type of fuel
Correct fuel pressure (53 PSI per Ford spec)
Sufficient air supply (clean air filter & unobstructed intake)
Proper oil level in HPOP reservoir (1 to inch from top)
Proper glow plug relay and glow plug operation (in cold weather)
Proper injection timing (PCM controlled)
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post #3 of 25 (permalink) Old 09-07-2016, 03:05 AM
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Re: To all the no start people looking for info...

Quote:
Originally Posted by Ennat1 View Post
7.3L Powerstroke Starting Requirements:
Battery voltage a minimum of 10.5 volts while cranking
RPM at least 100 while cranking.If no tach movement on 2001 and older models suspect CPS
If you have a scan tool ICP should be 500 PSI 25 PSI and fuel
pulse width should be 1 to 6 milliseconds.

The above requirements assume the following:

Correct oil level, oil type and pressure
Correct type of fuel
Correct fuel pressure (53 PSI per Ford spec)
Sufficient air supply (clean air filter & unobstructed intake)
Proper oil level in HPOP reservoir (1 to inch from top)
Proper glow plug relay and glow plug operation (in cold weather)
Proper injection timing (PCM controlled)


Just want to add one correction, in red
Sbluke55 and Ennat1 like this.

2002 F 350 4x4 CREW 164K, Isspro boost, tranny, pyro, FP, Hpo, coolant filter, Dieselsite tranny filter, AIS intake, ITP pre pump mod, 6.0 tranny cooler, AE & Torque Pro.
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post #4 of 25 (permalink) Old 09-07-2016, 11:55 AM
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Re: To all the no start people looking for info...

Just to add to that. If you have a mechanical odometer it will read rpm. Digital will not. They changed half way through 01.

01 f-250, Standard
Rev tech 4" lift, 37" military wrangler Mt tires
KC diy 66, Full force 160/100 and custom tunes from PHP
Banks intercooler and full 4" exhaust, Diy S&B intake
Diy quad feed, Hydra, Isspro boost, pyro, and fuel pressure
3/0 battery cables with military style terminals
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post #5 of 25 (permalink) Old 09-07-2016, 01:16 PM
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Re: To all the no start people looking for info...

this is 'sticky' worthy! eh?


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post #6 of 25 (permalink) Old 09-07-2016, 01:55 PM
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Re: To all the no start people looking for info...

woohoo! stickyness!


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post #7 of 25 (permalink) Old 09-07-2016, 01:56 PM
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Re: To all the no start people looking for info...

Done. It's a sticky now. Just for an FYI. Golfer (dave) is from swamps diesel.
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01 f-250, Standard
Rev tech 4" lift, 37" military wrangler Mt tires
KC diy 66, Full force 160/100 and custom tunes from PHP
Banks intercooler and full 4" exhaust, Diy S&B intake
Diy quad feed, Hydra, Isspro boost, pyro, and fuel pressure
3/0 battery cables with military style terminals
Sbluke55 is online now  
post #8 of 25 (permalink) Old 09-07-2016, 11:20 PM
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Re: To all the no start people looking for info...

Quote:
Originally Posted by Sbluke55 View Post
Just to add to that. If you have a mechanical odometer it will read rpm. Digital will not. They changed half way through 01.
Never knew about a mid year change. Did they go to the VSM and the relocated fuse box on the later production 2001 trucks at the same time? And the hybrid electronic instrument cluster? I would assume it to be the whole package since the hybrid cluster works with the VSM.

2002 F 350 4x4 CREW 164K, Isspro boost, tranny, pyro, FP, Hpo, coolant filter, Dieselsite tranny filter, AIS intake, ITP pre pump mod, 6.0 tranny cooler, AE & Torque Pro.
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post #9 of 25 (permalink) Old 09-08-2016, 03:23 AM
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Re: To all the no start people looking for info...

Yep to all questions.

01 f-250, Standard
Rev tech 4" lift, 37" military wrangler Mt tires
KC diy 66, Full force 160/100 and custom tunes from PHP
Banks intercooler and full 4" exhaust, Diy S&B intake
Diy quad feed, Hydra, Isspro boost, pyro, and fuel pressure
3/0 battery cables with military style terminals
Sbluke55 is online now  
post #10 of 25 (permalink) Old 12-04-2016, 04:29 PM
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Re: To all the no start people looking for info...

I know this sticky is a couple months old but I think I've got a new one for you guys that I can't figure out on my own (and I work on these things everyday.) So im currently building a 95 7.3 with auto trans, the body's off a 92 frame and drive train are 95. Everything was swapped with no issues, installed the tee code pcm and ran into a no start. Flashing check engine light and will not perform a buzz test, my solus scanner goes through the motions to perform the test but it fails and apparently can't communicate with the injectors. That being said, every single sensor, icp, ipr, cps, ebp, oil temp, water temp, I mean this is a ground up rebuild and everythings new. And before you say it could be a bad sensor out of the box, here's the kicker, I plug in a Alf code pcm, which is for a manual opposed to automatic, check engine light is steady, solus communicates and performs buzz test with no problem,and truck fires and runs smoothly, and I can read everything to do with the automatic trans through the solus on a pcm that theoretically doesn't care about the auto. Any thoughts or personal experience is definitely appreciated.
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