I when to start up my 1988 mustang the other day and she had no spark.
The factory EFI system tuned with a Tweecer
MSD 6AL box
BMN window switch
MSD digital Retard box (8975)
Car ran great before I parked it.
I use the MSD ford TFI harness (part number 8874) to hook up to the coil, so my added on electronics are easy to bypass. So my first knee jerk reaction was to bypass everything and run it without the 6AL, window switch, and retard box. As soon as I did that she roared to life.
Now to fix this thing:
I have checked that I power and continuity to everything, and I even swapped in a new 6AL box, still no spark.
I noticed that there is a little LED light on the timing retard box that isnít lit up. I canít remember if it used to be lit up or not, but that does seem highly suspicious. I am starting to think my retard box just shit the bed, but before I start throwing expensive parts at this thing, is their any way you guys know how to test this thing(or if that light is supposed to be on when the ignition is on) ? I couldnít find anything on the MSD website.
Any other ideas, suggestions, etc, I really hate to throw parts at cars, especially when they cost a decent amount of money.