Ok, I just got through installing a new Idle Control Valve.....hoping it would solve the problem.....it didn't! I am about out of ideas. I was hoping I might get some ideas here or better yet...a confident solution. We have done everything possible to remedy the issue with the exception of ordering a new chip! I am not sure that would be the issue as it runs perfect otherwise. I will order one as the last effort.
As explained in the above lead post.......it idles nice, then goes very low, then sometimes back again. But the 1k idle we are trying to keep just wont stay and it sometimes starts in the AM and after a 20 sec run, shuts off.
It just seems to be struggling to get air or fuel. Even took out the fuel filter but it was spotless.
Can't be a huge thing, but we cannot find it.