Went offroading today, hit a bump a lil hard I guess, engine light came on after a bit of on road driving, as well, as it doesnt seem to be shifting into 4th gear...also popped a drive shaft, bearings fell out in the driveway
anyways, my question is, any ideas on what might have happened?
how hard is it to replace a drive shaft?

 

First...what type of vehicle are we talking about? Year, Engine, options, etc...

As for "the bearings fell out"...are we talking about U-Joint bearings, or something else?

Later.

 

whoops, sorry
its a 1995 Grand Cherokee Limited, with a 5.2L V8
up country suspension, other than that, all stock

 

Driveshafts are easy, where did it come apart at the diff or transfer case, front/ back? Like wjcraig asked was it the u-joint that came apart ? All important info if you want an accurate answer.

Dan

 

my bad lol, wasnt thinking, its not driveshafts, im so stupid...its the cv shaft, it was the front drivers side, I was told by my local tranny shop today that the speedo/odometer, and OD is all related to a wire that comes from the tranny, possibly a dirty sensor?

 

CV joint's are easy to replace if your moderately handy with the wrenches, remember to always replace them in pairs.
You never mentioned what your guages are doing...need more info

Dan

 

sorry, my gauges arent doing anything, my speedo and odometer do nothing while driving, and no OD while driving, I was told it could be some wire?

 

From the 1995 ZJ Service Manual;

SPEEDOMETER/ODOMETER
The speedometer/odometer gives an indication of
vehicle speed and travel distance. The speedometer
receives a vehicle speed pulse signal from the Vehicle
Speed Sensor (VSS). An electronic integrated circuit
contained within the speedometer reads and analyzes
the pulse signal. It then adjusts the ground path resistance
of one electromagnet in the gauge to control
needle movement. It also sends signals to an electric
stepper motor to control movement of the odometer
number rolls. Frequency values for the pulse signal
are shown in a chart in Specifications.
The VSS is mounted to an adapter near the transmission
or transfer case output shaft. The sensor is
driven through the adapter by a speedometer pinion
gear. The adapter and pinion vary with transmission,
transfer case, axle ratio and tire size.