Heater blower replacement is 3 - 4 hours at the shop - a big unpleasant job.

Dash etc has to be totally removed.

Marshall Ruskin

Heres what my problem or at least what i think my problem is. I noticed the
same symptoms. When i replaced the fuse which looked ok, and only used the
wipers no problem, but when i left the heater blower on for a bit i got the
problem. I think in my case and maybe yours, my heater blower motor is on
it's way out. When i leave it on it draws more current that normal. The 16A
fuse heats up and melts before it blows. It is no longer long enough to make
a good connection between the terminals, however if you wiggle it or hit a
bump it may sit just right and start working again.

does anyone know if the heater blower motor is a big job?

john
85
westy