1986 mustang lx 3.8l

if it's automatic check to see if tranny fluid is low could be tranny modulator. easiest way to check is jack up car follow vacuume line coming from intake down to tranny. while car is running pull vacuume line off of modulator. if bad she should be spitting fluid. [note if modulator is bad will give engine a skip do to tranny fluid fouling out plugs]. just be carefull when you pull out modulator seeing thier is a pin that goes into the center about 1 1/2 to 2 inches[do not loose and has to be put back in]

Has anyone asked if the right amount of oil is in. If too much it will smoke.I've seen it done.my friend is stupid and put oil in without draining first. He had to drive it to burn off the smoke.

Thanks guys I will give these a try.