Throttle body 1985 GT Conv. Mustang.
Im in a situation where Im randomly getting no spark from the coil. This has been going on quit a while. I am now in position to test - the car is at home and not sparking. I just hope it doesnt start sparking before I find the problem.
last time I replaced both the TFI then the Coil. From my last test I pulled the wire from the coil and saw no spark but then later, minutes, it started sparking. At that point there was nothing to check, I replaced the coil then.
I know of one way to get it to start/spark, by disconecting the fuse type wire leading from the TFI. I have know idea what it is.
What is it? is it a clue? If I leave it disconected and drive a while I can then connect it back and all is ok
What is this? MSD?? It looks like I replaced it
(passenger side below coil)
Any sugesstions on what to check first?
Do I have an MSD type box??
thanks