Boy, you disappointed me! I looked at the title of the thread, and I figured someone had a TJ with a supercharger in it!! <img src="/forums/images/graemlins/smile.gif" alt="" />

BJ is right -- it's most likely that your blower speed resistor is toast. Replacing it should fix your problems. However, I would also hceck the blower fuse -- sometimes, when the last segment of the resister blows out, it takes the fuse with it. But usually, it's just the resistor. Jeeps been doing that since the CJ's were made.

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.