I have an '87 900S (originally came with A/C, but that hasn't worked
for years) that is getting very hot when stuck in traffic.  By very
hot, I mean the temperature gauge is about 7/8 of it's way to Red.  I
had a similar problem last summer and I noticed that the radiator fan
wasn't coming on, even when I parked the car.  I had the fan switch
replaced and things were good again for the rest of the summer.  Now
I'm seeing the same symptoms, however, the fan does come on when I park
the car, and it sometimes comes on in traffic, but not until the temp
needle is almost on the red.

Is it possible that too much switching in the heat is affecting the
switch?  The reason I ask, is that last summer when I took the car in
to have the fan switch replaced, the owner of the (Saab only) shop said
that she sees a lot of this in the summer and that the heat is hard on
the switch.  That doesn't quite seem right to me, but Saabs are wierd
cars, so I figured I'd see what everyone else thinks.

Question #2, where is the fan switch located?  I may just want to
bypass it and have a switch on the dash where I can control the fan.  I
always rather be in control, rather than have it be automatic.

Question #3, even when running down the highway at 60-70 MPH the engine
is running hotter than it did last summer.  I suspect that this is an
issue with a clogged radiator, but I'm not totally sure.  Is there an
easy way to check and see if the radiator is clogged before I take it
to the $80/hr garage.  I don't have much room to work on the car, so I
can't take the radiator out and stuff like that.

Thanks!
Mike