A few weeks ago a my 08 jKU w 25,000 miles on it developed a clicking/ticking sound. Ive barely driven it since.
It's definately coming from the tranny area. It almost sounds like metal cards in bicycle spoke.
It occurs in Park and 1st, 2nd, 3rd gear, not OD and not in reverse. Does it at idle and while driving. The clicking sound follows the RPMs. While driving it occurs cold or hot, at start up it happens without touching gas only when cold. A warm start sound won't occur until you rev the engine.
Its sounds similar to a bad lifter but it's not a lifter. THere are not metal flakes in the tranny fuid which is nice and pink.
Jeep drives normal. It's not slipping, clunking, shuddering, nothing but the tick.
My best guess would be flex plate or cracked planetary gears maybe???
Any insight or experience with something like this....