Join Date: Dec 2012
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Since this is my very first post, I hope I am putting in in the correct section! Please don't be too judgemental.
A few months ago, the idle was intermittingly rough and would do a slight surge at a stop light. When that would happen the RPMs would go up and then back down. We replaced the ICP and it ran great with no issues for a month.
Now upon cold starts, the truck idles rough. After a longer drive, it does smooth out. So far there are no performance issues, but the rough idle went from slight to far worse and it taking longer and longer to smooth out.
There is no black or white smoke, no oils leaks, fuel leaks, no codes that come up, and the check engine light has not come on once.
Any ideas of what is going on?
BTW….the FICM was recently repaired by FICMrepair.com so I know that cannot be an issue either.