I've got a 98 XJ, and I'm having a little difficulty with my front passenger side window - while the passenger can roll it up and down from their side, and I can roll it up from mine, I at times cannot roll it down. I thought it was the motor at first (it was in the up position, couldn't roll it down, and didn't have the bright idea to try the passenger side), but have since ruled that out. If it works perfectly fine on the passenger side, and up on my side, I'm guessing it's something in the wiring or switch? Every now and then it'll let me roll it down. My best guess is maybe a grounding issue, but I don't know the electrical very well - does each direction have a seperate ground? Any guesses before I start doing some exploratory surgery?
"If it rips out of the engine and starts preying on small mammals then its the 0331 head."