I have installed a mileage master jacobs ingition in my 88 f250
460. I can get it started but it runs for only about 2 min then dies.
I suspect the theft feature. But have thoroughly read the instructions for that feature and the instructions for this very problem on the Jacobs web site. But to no avail. When the two wires that attach to the microswitch are open the vehicle starts but only runs 2 min. When the 2 wires are shorted togeather it ownt start. Have tried to reset and it will start but only runs 2 min. Does any one know how to disable this feature?? Any help would be greatly appreciated. I have not had any luck getting Jacobs service on the phone either. Thanks guys.

 

Never messed with the Jacobs stuff, but you might try posting your problem in the 1987 - 1996 Trucks and Vans forum.