07 6.0, No Re-Start After Warmed Up - Ford Powerstroke Diesel Forum
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post #1 of 22 Old 10-29-2009, 10:16 PM Thread Starter
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07 6.0, No Re-Start After Warmed Up

I have an 07 6.0, 145,xxx miles, starts fine when cold, runs great. But after it has warmed up, it will not re-start after shut down. I know there are a few things that can cause this: Bad ICP, leak in the HPOP(STC fitting, leaking o-rings). No codes other then codes from EGR delete. When I did the delete I also changed the MAP, IAT and EBPV sensors. MAP sensor I broke lil nub hose plugs into, IAT was all gummed up from busted EGR cooler. EBP changed for maintainence. I am getting her scanned on Saturday. What am I looking for as far as normal parameters? If parameters are correct, how can I verify that it is a mechanical leak?

Thanks,
Russell

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #2 of 22 Old 10-30-2009, 09:51 AM
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Originally Posted by Tacomarunner View Post
I have an 07 6.0, 145,xxx miles, starts fine when cold, runs great. But after it has warmed up, it will not re-start after shut down. I know there are a few things that can cause this: Bad ICP, leak in the HPOP(STC fitting, leaking o-rings). No codes other then codes from EGR delete. When I did the delete I also changed the MAP, IAT and EBPV sensors. MAP sensor I broke lil nub hose plugs into, IAT was all gummed up from busted EGR cooler. EBP changed for maintainence. I am getting her scanned on Saturday. What am I looking for as far as normal parameters? If parameters are correct, how can I verify that it is a mechanical leak?

Thanks,
Russell
Being an '07 model year, I will tell you you already answered your own question. Either and/or (STC fitting, lower o-ring on dummy rail plugs). Monitor ICP volts, ICP psi, ICP desired, IPR duty cycle & RPM. ICP volts should be between 0.15 & 0.35 at key-on/engine-off and climb to MINIMUM 0.8 as you crank the engine over to start it. ICP psi should read 0 psi at key-on/engine-off (obviously) and climb to MINIMUM 500 psi.

If your IPR duty cycle maxes out at 85% and you still fail to reach 500 psi, that confirms that you have a mechanical leak in the high pressure oil system.

The part numbers from Ford for the STC fitting kit is 4C3Z-9B246-E, and the dummy rail plugs are -W302195.

http://www.yorkdaleford.com/service.html

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post #3 of 22 Old 10-30-2009, 11:22 AM Thread Starter
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Hey thanks, M-Chan. These o-rings on the dummy rail plugs, passenger side and driver side? AWWW the joys of pulling the top of the motor off again. Should I have just changed these parts the last time I had apart due to mileage, or are they just something that goes?

Thanks again.

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #4 of 22 Old 10-30-2009, 02:04 PM
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Originally Posted by Tacomarunner View Post
Hey thanks, M-Chan. These o-rings on the dummy rail plugs, passenger side and driver side? AWWW the joys of pulling the top of the motor off again. Should I have just changed these parts the last time I had apart due to mileage, or are they just something that goes?

Thanks again.
Yes, there is one on each bank of cylinders. You need a 10 allen key to remove.

http://www.yorkdaleford.com/service.html

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post #5 of 22 Old 10-30-2009, 07:59 PM Thread Starter
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One more question, if there is a mechanical leak, will sensors read correct?

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #6 of 22 Old 10-30-2009, 08:03 PM
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One more question, if there is a mechanical leak, will sensors read correct?
They SHOULD. That's why I mentioned to look at the above mentioned values while you're at key-on/engine-off.

http://www.yorkdaleford.com/service.html

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....but STILL loves hot women with big boobies

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post #7 of 22 Old 10-30-2009, 08:57 PM Thread Starter
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Thanks again M-chan! A tech @ his finest!

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #8 of 22 Old 11-07-2009, 03:21 PM Thread Starter
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Update...

Got her on a scanner to today, all parameters were in spec except the the cranking volts of the ICP.

ICP @ key on engine off: 0.25
ICP @ cranking: 0.56
ICP pressure @ cranking 2k plus.

Is this enough information?
Would this be a bad sensor?

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #9 of 22 Old 11-07-2009, 09:32 PM
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Quote:
Originally Posted by Tacomarunner View Post
Got her on a scanner to today, all parameters were in spec except the the cranking volts of the ICP.

ICP @ key on engine off: 0.25
Seems to be well within spec.
ICP @ cranking: 0.56
Here's where we have a problem. 0.56 is definitely short of the minimum 0.8 volts needed to start the engine.
ICP pressure @ cranking 2k plus.
???? I don't understand this information

Is this enough information?
Would this be a bad sensor?
Okay. Now what about ICP psi? What is your IPR duty cycle at HOT engine idling? Typically, it should be between 21 to 23%. Any higher than that, indicates a high pressure oil system leak causing an elevated duty cycle. As I indicated in my previous post, it sounds like you have a high pressure oil system leak somewhere, that needs to be pinpointed and repaired.

http://www.yorkdaleford.com/service.html

Ford Diesel/Senior/Master Tech who placed 2nd overall in Ontario on the Fix-It-Right-First-Visit score for 2010

....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff

....but STILL loves hot women with big boobies

....and STILL hates working on E-Series with 6.0L
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post #10 of 22 Old 11-07-2009, 09:47 PM Thread Starter
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The cranking pressure of ICP was 20xx psi (?). While ideling it was 40xx plus. I believe I noticed the IPR @ 25 % while ideling. Unfortunately I didn't write all that down.

A leak could lead to the low voltage reading even though the cranking PSI on the ICP is in spec?

Thanks again.

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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