Are you talking about the timing belt or the serpentine belt?

I just put a new timing belt, tensioner and guides (plus waterpump) in my '95 GL. The tensioner fell apart at 165K.

The new belt slaps against the cover for a few minutes as well. After it warms up a bit it quits. The original did this at about 90K. I am going to take it apart and play with the timing belt tensioner to see if I can get it to quit.

By the way:
timing belt tensioner at Prestige Ford (Dallas) $76.00
guides (both) $132.00
timing belt (AutoZone) $39.00 (approx.)
water pump (AutoZone) $79.00 (approx.)
vavle covber gasket (AutoZone) $29.00

Good luck!!

DB