I am curious if you solved the problem with your B2600. I am having the same problem, I found another truck at the junk yard and got all the elect parts out of it. Changed all, one at a time starting with computer, coil, igniter, distributor, sensors. Got new plugs, wires, relays, and fuel pump/filter. This is a newly rebuilt motor that was running strong for most of a year then just crashed. Had it running again for a little while but same problem (just like yours) keeps coming back.
Saturday, September 26th, 2015 AT 9:15 PM