Re: High Idle Issue
I did disconnect the line at the PCV valve sometimes and also observed the idle go up. The IAC tries to compensate by closing it, but the air opening via the PCV line is too big and results in higher idle. When reconnecting the PCV line again, the engine died out, because the IAC didn't open fast enough to keep it running.
Good to hear the PCV line was your problem.
JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks /
Pirelli Scorpion ATR 245/65/17/
Transgo reprogramming shiftkit.