I HAVE A 1996 S-10 IT RUNS ROUGH. IT ACT...

sometimes while driving the vehicle you may hit a bump or pothole causing a wire to jiggle just enough to cause said occurrence as while merely sitting there with the analyzer on it nothing will show very common for this to happen at this point its hard to say ..however make sure all the plug wires are properly seated upon the plug even still the wires are new they also are not always without defects use a spray bottle with water and spray the wires to see if and arch is visible on the wires themselves also make sure the obvious wires etc are where they are supposed to be or a wire that is exposed to start with as well as check over all the vacuum lines for wear or rot due to heat ....would love to know what you discover