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In the mornings, after the truck has been sitting all night, it has a hard time idling and runs extremely rough for the first 10 seconds. I am not showing any codes on the PCM and it doesn't matter on the outside temp. I was thinking that it was a fuel pressure issue, but I have plenty of pressure on the gauge mounted on the fuel rail. I was wondering if it could be a bad Map sensor or some other type or sensor on the engine? Any Ideas?
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Well your proportional idle control doesnt kick in for the first 12 seconds or so. You might just have to deal with it. You can see if Allen can adjust the cranking VE or spark controls for it, but I am not sure which one you would go for.
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I guess that I will email Allen on it. The problem is intermitant, one week it happens and the next its fine.
