The computer sensed that something was wrong, and activated a code and the CEL. There are many things that could have caused the CEL to be activated. When you disconnected the battery, you erased the code that was associated with the CEL, but you didn't solve the problem that caused the CEL in the first place. After driving a while, the computer again sensed the problem, and the code and CEL re-appeared. Autozone will probably diagnose the codes for you for free.

Last edited by bentleywarren; 11/25/02 10:05 PM.
95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6