Noise from Idle air control valve after dohc turbo install.
I noticed after my turbo install at idle the "Idle air control valve" has a hissing noise like a vaccum leak from it . It coming from the vent (cap looking thing). I was wondering if it bleeds off a certain amount of air??. The car idles fine. I dont want to have a vaccum leak .
1999 Rio Red/ Black Cobra . Manley Pistons, Scat rods Arp hardware.... On 3 Performance Kit w/Master power 70mm Turbo, 03/04 cobra tank and pumps , 60lb injectors ,HPX Mass air, 4:30 gears 03/04 axles & diff & SCT tuned by EFI logics
Last edited by nicecj7; 06-09-2010 at 10:01 AM.