by Diesel » Mon Feb 23, 2015 6:00 pm
Don't worry this is a common problem and simple to fix. Its almost always a throttle position sensor issue. I was able to clean mine and its back to normal. You could also replace it with a new OEM (about $250) or a swap in a similar era Mopar one with some modifications (about $30).
1991.5 D250 Intercooled A518