Ok so I've been driving a 1981 vw rabbit caddy for about 2 months now. The engine sat for over a year but started right up and has been fine till a few days ago. I was driving down the highway and it died in gear some how and felt like it bound up. My first thought was oil or fuel. But now I'm really confused cause it will start as long as I give it some throttle but dies the second I let off like it's almost binding. When I have it running it runs perfectly fine. And there are no lights indicating oil pressure issues but I'm still wary about it and can't get it to idle. I'm stumped and am worried I'm damaging it by running it wile attempting to use trial and error to figure out what's wrong.