Well I beleive that I have found the culprit of my rough engine idle. The other day on the way to work I could hear a slight hiss as I depressed the brake pedal. This led to a very hard pedal and practiacally manual brakes. I took a look at the booster and where it enters the firewall. I believe that the diaphram is bad. Does anyone know of a good place to get a good rebuilt booster? I have heard of Booster Dewey, anyone else? Chad Zeilenga 1973 Imp 1966 Galaxie 500XL __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/