Very strange thing happened on the way home from work. It's cold here, been shifting in and out of 4wd for the snow.
Almost home, no CEL, temp in the middle, no other lights or warnings. Get a high pitched whine as I pull in the driveway. Shut it off, coast in. Start it up, no problem but the high pitched whine is there and gets worse. Let it sit, have my better half start while I'm looking in and it's much worse very loud and almost a metal to metal type sound. Car starts fine but has the noise immediately, all belts are moving. Didn't run it for more than 30 seconds total since the noise started.
Any ideas? Of course I had just phoned and completed a deal to trade the truck in. Unfortunately, even a car dealer will notice this.
97 Pathfinder, 159k miles, A/T.
Any input would be greatly appreciated. Thanks.