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You can try starting with fan off (right knob on "0"),. Posted by Bill Homer [Email]  (#3427) [Profile/Gallery]
(more from Bill Homer) on Wed, 22 Jan 2003 10:53:12
In Reply to: Re: Blower motor keeps popping fuses....., Matti, Tue, 21 Jan 2003 23:57:02 Members do not see ads below this line. - Help Keep This Site Online - Signup |
but sooner or later you will forget to do this and blow the fuse again. When the car is cold, you have two things working against you:
1. whatever lubrication the motor has is "stiffer", causing higher drag, requiring more power.
2. on startup, the battery voltage is down, requiring more current for the same power (P=VI). More power for the "stiff" motor will require even more current!
The note above about the motor "protecting itself" from too much current with a bimetalic switch could be a possibility, but even if so, the motor is still drawing too much current and will eventually need replacement. Townsend's site has a good diagnostic if you have a high-capacity ammeter (need 30 Amps!).
Blower motor failure is a normal occurance on these cars, especially given their age. Unlike some cars (big old American cars, for example), replacing the motor is a PITA (I just did my '83 a few months ago). The only good news is that a replacement motor is not that expensive - several site sponsors have a new Mexican-made Siemens motor (with fan installed) for $65 - $75. You have to cut the wires and add male lugs to hook up to the existing harness - black is the ground side. Even if it lasts half as long as the original, that's fine - I doubt that I will own this car in ten years!
posted by 129.188.33...
, Wed, 22 Jan 2003 10:53:12 <-- Viewing This Message
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