I have a 1999 Wrangler which normally runs great. I have been having a very intermittent problem where the motors starts to run rough, causing the Jeep to shimmy. I think that it is related to the AC and the problem seems to be more pronounced when the weather is extremely hot. Yesterday was a really problematic day as it was very hot in NJ and I dove for many miles in stop and go shore traffic. I have also noticed that sometimes when it is running rough and shimmying, if I take it out of gear it returns to a normal idle.
I had it in the shop once already and they replaced a bunch of sensors and a cracked distributor cap and didn't improve the situation at all. Would be very grateful if someone had some guidance or any ideas.