Originally Posted by jdanilson
My 2006 wrangler unlimited (33K miles) with automatic has just started having a problem. It occurs when starting from a dead stop and accelerating to 1 or 2 mph at which point there is a terrible clunk (metal on metal) sound from the rear and a jerk. Both times I thought I had been rear-ended! It's definitely not the brakes and I'm guessing it's in the differential.
It first occurred on 12/24. It occurred again on 12/27. So only two times but I've been doing lots of driving. Both times were nearly identical. I was stopped at a light and started accelerating. If it makes a difference, I've been doing a lot of 4H driving here due to snow but in both of these situations I was in 2H mode. (I've done some limited off-road driving but none recently; the last time was back in August 2008.)
I'm taking it to the dealer on Thursday (12/31) but hate to go there with an undiagnosed issue.
Thanks in advance for any ideas.
Do you also det an engine flair? If so, check the auto transmission fluid level. But since you indicated a metal on metal noise, it may be a loose rear axle / suspension link connection or bushing. Also, could be something like a loose or broken transmission mount.