I have been having intermitent problems with starting my 98 Windstar and it appeared to be a missing spark. If I let it sit for a while, it would eventually restart. I purchased the ELM327 OBDII product to try and help determine the problem. What I found was the car started any time the RS232 cable(just the cable and not the electronics) was connected to the J1962 connector it started. Anybody have a clue why this may happen?