Yea I can not set car @ 900 rpm, where it probably should be, it is a 4 speed. as soon as I turn idle up and get to about 870-880 it just takes off to the 1050-1150 as stated above and stays there, then have to loosen idle screw to get it back down, only does this if vac adv hose hooked up,won't do this if I plug, but I want it hooked up and it all to work the way it is supposed to. I do not know what else to try before buying a new distibutor.