Re: idle drops when ac or heat is turned on
I think it plugs into a vacuum switch that controls your the amount of heat you want in the cab? Do you still have that ability? Perhaps that switch was removed, because it should be attached to the heater hose where it tees off. Either way without being plugged up or into something, it's a vacuum leak.
08 4.0 Sport 4x4
Last edited by mickblock; 10-14-2010 at 05:03 PM.