The 1990 acted up again today. Couple months ago it was an oil pump. Went to leave work, started it and it would not idle. Motor jumps around then shuts off. If I start it, instantly bring the RPMs up to 2500+ it will run just fine. Put a load on it and it dies. It's acting like it jumped time at low rpm. It fuel were a problem it wouldn't run at high rpm. I'm going to dig into it tomorrow night. Right now it's in the work parking lot and Cindy brought me home. Taking the trailer tomorrow.