Cranking but not firing.. - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-26-2011, 07:09 AM Thread Starter
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Cranking but not firing..

I am sitting in a walgreens parking lot just drove up here just fine, I buy stuff come out and it won't start. It is cranking but won't catch, tach is working all gauges working fuel pump is humming.... Any suggestions before I call AAA??

2000 F250 4x4 Supercab Lariat 7.3
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Straight pipe - 5" tip
195k Running strong
Commute 75miles day @17.2mpg
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post #2 of 11 Old 01-26-2011, 07:48 AM
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is the wait to start light coming on? If not its a fuse but you must unplug the fuel heater bowl then fix the fuse.

2008 6.4 f250 lariat 4wd
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post #3 of 11 Old 01-26-2011, 09:06 AM Thread Starter
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Yeah wait light comes on

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Commute 75miles day @17.2mpg
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post #4 of 11 Old 01-26-2011, 09:09 AM
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You need to get a hold of a scan tool and monitor the ICP and IPR readings.

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post #5 of 11 Old 01-26-2011, 09:10 AM
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you can try unplugging the icp sensor and see if it starts. If its that with it unplugged it will o to a defualt setting which should idle the truck

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post #6 of 11 Old 01-26-2011, 09:23 AM
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IPR needs to be at least 500 psi to start and the ICP needs to be at least .85 volts


Last edited by dhanna6powerstroke; 01-26-2011 at 09:34 AM.
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post #7 of 11 Old 01-26-2011, 09:30 AM
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Quote:
Originally Posted by dhanna6powerstroke View Post
IPR needs to be at least 500 psi to start and the ICP needs to be at least .85
icp needs to be at least 500 and ipr should be no more than 45 percent to start , if ipr duty cycle goes to 85 percent then its closing off to far , and there is a problem, icp voltage may be around .85 to .90

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post #8 of 11 Old 01-26-2011, 09:34 AM
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Quote:
Originally Posted by SCUFFY828 View Post
icp needs to be at least 500 and ipr should be no more than 45 percent to start , if ipr duty cycle goes to 85 percent then its closing off to far , and there is a problem, icp voltage may be around .85 to .90
Oops, I had those backwards.

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post #9 of 11 Old 01-26-2011, 09:35 AM
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Oops, I had those backwards.
just messin with ya

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post #10 of 11 Old 01-26-2011, 09:44 AM
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just messin with ya
Gotta be wrong sometime

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