Jumping and banging noise

go to the magicmechanic website and send him this--hes the best there is and will rply

Check for leaking rear shocks or a loose sway bar.

02 Cadillac Escalade makes a rubbing grinding and starts clunking jumping noise after I drive about 20 minutes it usually does it when I've been driving for a while when it gets hot.

air fuel mix is wrong, its a jumping code meaning its misfiring on all cylinders, broken valve spring would only do one cylinder, could be the timing is out or its being starved of fuel or air. or you have a vacuum leak or manifold leaking. can also be a clogged egr. . and also a clogged fuel filter, also induction flush can do more damage than good. if its not done properly the loose particles can clog up in the small veins in the engine. in away just moves a none problem oil problem to a motion problem.

this is quite comon on the free lander the noise you are hearing is the rear diff jumping due to the failure of one of the mounts (usually the forward one)

let me know if this helps
cheers

check for broken engine or transmission mounts

it sound like u have bad 1/2 clutches going bad

Your muffler has either snapped or has come loose and is banging against the chassis

I just went through lots of troubleshooting and expense on my 1996. Whenever I would lift my foot off the accelerator and was below about 30 mph, the rpm's would starts jumping around and sometimes it would stall. If I gave it a little gas (accelerator), I could sometimes keep it running. It also backfired once in a while. Starts right back up. Also, if I let it idle while in part, it would die after 1-2 minutes.

I ended up finding a hole in the fuel regulator. About a ~$70 part if you get an AC Delco, but very simple to change.

i had the same exact problem with my chevy s-10, but once i replaced the battery it ran fine no problem, u may have fried some circuits and relays while jumping the car, and alot of times that clicking noise is your relay burning out, did your car start doing weird things too? like ejecting cd's, flashing lights really fast and weird noises?