Originally posted by Tony2005: Intake Manifold Runner Control. Check Engine Light (if this is lighted, you should get it scanned and post the codes). Free service at Autozone or Advanced Auto. Edit.IMRC and locationhttp://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1086876&page=&view=&sb=5&o=&fpart=1&vc=1http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=1090525&page=0&view=collapsed&sb=5&o=7&fpart=1