So I've noticed on my 96 that sometimes when different electrical things turn on or off it seems like the engine hesitates. Today doing some experiments on the way to work I was able to reproduce it every time with the washer fluid pump, but I'm not sure that it's the pump doing it or a more general electrical issue.

Driving down the road today if I hit the washer pump to spray my windshield it's like the Jeep bucks or possibly misses. It seems to do it as I release the button turning off the pump, but I'd have to pay more attention. It also didn't seem to do it at idle when I was at work parked, only under the load of driving.

Any thoughts?

 

I would start by cleaning ALL of the grounding points and not just the battery cables. Just one bad ground can cause a lot of strange elect issues. Give that a try and let us know if it changes anything.