I have a York Stellar furnace that is 16 years old. After the heat
cycles on and off, the blower will occassionally stay running. If I
tap the fan/limit control very lightly the metal disk unsticks,
jiggles a bit, and then the blower shuts off. Then it may work fine
for a few cycles, but sooner or later it will stick on again and need
to be tapped. I assume that this is the part that needs to be
repaired, but is it pretty easy? The fan/limit control is a
Honeywell, so I assume I can find the model/part# and get a
replacement or just take the old one in. I've attached a pic at
http://img199.imageshack.us/img199/2626/img1509fo.jpg

Thanks!