My project 08 Esky with 234K miles has been pretty good so far. Took it for a 300 mile road trip and got 17 mpg on the freeway. I have been noticing a "clunk" or something like that when taking off "briskly" from a stop or a downshift when accelerating on the freeway. So I jacked it up on the rear diff and the both wheels would spin. I thought this should be impossible if it is in park.
I then got underneath it and checked the u-joints and they looked fine. Then I spun the wheels. The drive shaft was not moving, so it definitely was is park.
I then put the front wheels on concrete with the rear wheels in gravel and tried to power brake it, the rear wheels did not spin the gravel. I assume that I have been driving with only the the front diff taking all of the load and pulling the Esky instead of it being "pushed" by the rear wheels?
Are the rear "posi" clutches worn out?
I am missing something here?
Mike
Project thread
https://www.tahoeyukonforum.com/thr...-mechanic-fixed-my-blown-engine-for-7.123682/