How often does an alternator freeze up? .
pretty often if you buy the cheaper reman'd units,
i made this mistake buying one from Autozone, was driving down the highway, smelled something weird, look at the volt meter, it was down to like 9 volts, and about the time i started to move to the slow lane in case something failed, it started screaching real bad.
Luckily, traffis was clear at that exact monent where i just darted to the shoulder and shut down the engine without tearing anything else up.
The rear bearing let go, had a small fire inside the unit as well, and unfortunately it cost me a tow bill as well, couldn't drive it.
another instance, my mothers truck ('94 pick-up) she was driving home from anout of town trip, lost power steering, we thought the high pressure hose blew, i drove an hour to where she was with a new hose, and turns out the front bearing of the pump failed, again, undriveable, towed it home with a strap, (that was interesting)
Idler pullies,,, i have found that they USUALLY will give some warning before they fail, they usually start squeaking and chirping a few days or weeks before they fall apart.
and yes, if the AC clutch decided to burn up, the whole pulley on the unit starts wobbling.
serpentine is nice for quiet belts and good tension on the accessories, but they do have their drawbacks.
if you have the money for the March setup, i know I'D run it in a heartbeat.
just my personal experiances and opinions.
