The aux blower motor only helps at idle, when you're not getting much air from the main engine cooling fan. I got through last winter's driving without it, but I think I'm going to get it fixed this fall.
I'm hoping the same shop that rebuilt my alternator can fix the motor for a lot less than a replacement.
In the mean time, you can just pull the relay.
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Bill Krause
'79 911SC Euro
MY PELICAN GALLERY