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Old 12-12-2012, 06:23 AM   #56
ls1nova71
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Join Date: Dec 2009
Location: Independence Mo
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Re: 6.0 Falls Dead, Cranks Up?????????

I had a mail order tune once that whenever you unhooked the battery for an extended period of time would not run without your foot on the gas. It's like it had to relearn everything. But it only took it a few miles before it was right again so probably not the same thing as going on here.
This to me sounds like something mechanical since it happened all at once. Are you sure you don't have any vacuum leaks? Like maybe the pcv hose that goes to the valve cover. Maybe didn't get put all the way back on after tightening the rockers? Also, have you had the intake off? Did you put new gaskets on it if you have?
Other than that, you may need to put a scanner on it to see if everything is working right. Maybe your TPS took a dump on you, or the IAC. IAc could also be gunked up or the throttle body could be too. Have you had your tuner look at it yet? He should be able to scan kit to see if everything is functioning as it should
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