Cruise control problem on '85 6.2 Diesel

[00StangGT]

I have a problem with the cruise on my '85 chevy. It will engage only like once out of every 30 times I try. It will also only set if I push the resume/accelerate slider to the left. It will not set if you push the set button on the end of the turn lever. Hopefully you can follow me on that. When it actually does set, it will kick out after like a second or two. Sometimes it will go for a couple miles, but after a bump, it will kick out. What could the problem be? This is my first question on this board. Looks like a really cool place to hang out and get some questions answered. Pardon the Screen Name, but I keep all of mine the same so that I don't forget them. Is there a forum for me to introduce myself and post some pics of my new truck?