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Weird starting problem

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Old Aug 3, 2011 | 07:22 PM
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Weird starting problem

For the last year or so my truck has been running great. Except for the fact that when I try to start it after it's still hot it won't start unless I press the throttle about half way down. Normally it isn't such a problem except when getting gas or just stopping in the store real quick. But it's getting worse, I just about had it towed yesterday b4 it finally started. A few months ago I checked the ficm and got 48v both pre and post starting so I don't think that's the problem. If no one can think of another issue I may have to replace the ficm anyway. Because I can't think of anything else it could be. HPOP?
 
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Old Aug 3, 2011 | 07:36 PM
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Need to monitor IPR duty cycle and ICP volts or pressure. You could have a leak in the HPO system.

Any DTC's?
 
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Old Aug 3, 2011 | 07:37 PM
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no idiot light but I haven't scanned it yet. only 68k on it.
 
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Old Aug 3, 2011 | 07:50 PM
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Yeah, you can have DTC's w/out that CEL.
 
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Old Aug 3, 2011 | 08:35 PM
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Originally Posted by bismic
Need to monitor IPR duty cycle and ICP volts or pressure. You could have a leak in the HPO system.

Any DTC's?

great advice!!

some gauges would help

I use scangauge II

but you probably have a bad STC fitting or dummy plugs in the hporail
 
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Old Aug 3, 2011 | 09:27 PM
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funny though pushing the gas pedel really does nothing as its all wires. if you had an issue with you should have a light and a buch of app codes to go with it.
as said look at icp issues.
 
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Old Aug 8, 2011 | 08:31 AM
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I forgot that that banks tuner reads codes also, I'm getting p2291 icp injector control pressure to low.
 
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