Saturday at midnight I was leaving a friend's house and when I started the truck (86 FJ60) the most awful squealing/screeching noise started (like belts not turning properly). I didn't let this go on for long because by now the entire neighborhood was probably awake. I tried two other times before I gave up. There was smoke and the smell of something burning. I came back in the morning and tried again, it made the sound again, but after about :20 this time it went away. Truck drove great 20 miles to the mechanic. MY theory: Saturday night it was below freezing. Would the water have frozen in my pump and kept it's wheel from spinning? Something wasn't turning, which was causing the belts to screech and smoke as they were forced over the seized wheel. But once in the warmth of the day, the siezing didn't last long as the water loosened up. Thanks for your input!