ol'stupidcoupe
Registered User
My vehicle is a '90 S/C with auto trans. I am experiencing an intermittant engine miss/buck & even will stall with hard restart. Within 1-2 miles from home & after filling with fuel this morning, with symptoms present I replaced the DIS (although I dropped 1 of the screws - rear near s/c) & the engine had extended crank to start & then still bucked 2-3 times in my 20 mile commute to work. Upon starting to come home, had extrended cranking & then engine shut off as if key was turned off when I truned on a/c - restarted again with extended cranking. On the way home, within 1-2 miles, the engine miss/buck returned & the tach started to jump & drop to zero. I pulled over to check - all connectors tight. This time the crank time was longer - I cranked for several seconds 2-3 times before engine would start. When the engine started the tach did not work for several seconds & then jumped up to idle speed. Ran O.K. for a few miles & then miss/buck returned as well as erratic tach. I then replaced back to the first DIS & changed the missing bolt to front outside bolt hole & now vehicle drove fine the rest of the 20 mile commute. The first DIS used is a Motorcraft that I purchased several years ago & have had on the vehicle since. The DIS I used as a replacement was a new aftermarket Standard make. Now for the guts, is the cam sensor starting to fail? Could it be that the ONE bolt I lost for the DIS was the ground & by changing it to another location suppleid the ground needed? More whacky Supercoupe problems, must be why we love 'em.