A couple of weeks ago I went to start my car, and it wouldn't. Had to get it jumped to get home, and on the way home I noticed a weird clicking sound from the engine bay and whenever I'd put G forces on the car (hard braking, fast cornering) the radio would turn off and on.

Replaced the alternator and got a new battery. Clicking disapreared, but the g-force related issues persisted off and on, as well as the charge light on my idiot light cluster turning on randomly.

Problems disapeared for a few days and the car sat for 4-5 days without being run. Went to start it up, it wouldn't. Had to jump it and the g-force related problems are back.

I'm not sure what else it could be, although I'm thinking maybe a short somewhere that randomly grounds in hard turning or stopping? My 3800rpm hesitation has also gotten noticeable in the past few weeks, so I'm not sure if that's related...

 

Check your grounds, specifically the main ground near the starter, the firewall-to-tranny bonding wire, and the rear rotor housing ground. For some reason a cold solder joint on the CPU also flashed through my feeble brain as I was reading your post...

Check the alt charging wire in the harness near the engine bay fuse box, also. Heck, check all of the wiring in and near the fuse box...

Make sure the batt positive post isn't moving and hitting the hood or chassis anywhere during your "g-force" maneuvers.

 

I'd also be looking at the nuts on the wires at the underhood fuse box, as well as the stereo wiring.