92rcsb
Newbie
Ok, so I recently had a crank, no start issue with my 92 rcsb. Sprayed some starting fluid and it fired right up, checked fuel pressure to find it was only getting about 8-9 psi. Changed out the fuel pump and it ran great for the day, next morning dead again. After some troubleshooting found out the pump relay was shot so changed that out and it fired right up, went for a test drive and all was good ran better than it ever has. Parked it, then went to run some errands this afternoon and now its idling sparaticly, and at close to 1500rpm when it decides to steady out occasionally, as well as surging when I'm coming to a stop. So now I'm at a loss, it almost seems like its overfueling itself. I know the ecm is pretty slow in these old tbi trucks but I figured after a few drives it would sort itself out and get used to actually getting the proper amount of fuel but no luck so far. Has anyone else had a similar problem or have any idea what I might be looking at here? Any thoughts would be appreciated, thanks in advance.