Dirty injectors or map flow sensor going bad. (Running too rich and flooding engine at cold start) If you are pumping the gas when you start it you could be flooding it. Try it without touching the gas and see how it does.
Those Mustang trans gave a lot of trouble. My first impression is that overdrive has come out, but some of those models actually had an electric switch that triggered the overdrive. Why don't you go and get a repair manual at Advance Auto and see if it has naything about a trans relay. I am not...
Any local towing company will do it, but what you need to do is find someone in NJ to tow it down to SC. Just do a yellow pages search for towing companies in the area in NJ where the truck is and call them and make arrangements to have it moved. It isn't going to be cheap though. They will move...
Try changing the fluid and filter and add a pint of Slick 50 High mileage transmission treatment. I have a 93 Buick and it got to where it would not go in any gear when it was cold and would refuse to go back to low gear when I stopped. I put a quart of Slick 50 in it and within 15 miles it was...
have the carbs re-jetted and put a cold air intake on it. Outside of going all the way through the engine and changing cams and all that, this is about all that you can do.
Either the throttle cable is sticking and needs to be lubed or the idle control sensor is going wacky. That is about the only two things that it could be. I have a 93 Lesabre and there isn't much else on the throttle assemble.