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Liam
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Blower Fan Resistor (?) Getting Red Hot
Hi all,
I just got a 1983 944 NA and have been replacing the interior and trying to get dents out before I register and insure it. The blower for the A/C worked at one point and now it does not. The other fan (smaller dial) does not work. The other day I noticed a burning smell and opened the hood to find that, what I believe to be, a resistor was red hot and melting the plastic housing around it. When I turned the fan off it cooled off. The resistor looked like it was for the blower motor, but I am not familiar with these cars so I am not sure where the blower motor really is, especially because I have done no work the engine bay except upgrade the throttle cam. The resistor is in the center of the car right under the windshield on top of a plastic housing. I can try to get to my shop later in the day tomorrow to get a picture. Any help would be greatly appreciated. Thanks in advance! Liam |
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04-07-2020, 06:32 PM
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Registered
Join Date: Jun 2014
Posts: 800
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they do fail.
the lower fan speeds are possible by shunting the juice through the resistor. about a 100 dollar part. check the brushes on your blower fan to see if there is a short there before installing a new resistor pack. (the fan switch in my Subaru melted the plug at the climate unit so do check everything) |
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04-08-2020, 03:26 AM
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curtisr
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__________________
1977 924 Guards Red (parted and sold) 1987 924s Alpine White (sold) 1987 924s Kopenhagen Blue (my Lowencash tribute track car -- sold) 1987 924s Garnet Red (currently becoming Lowencash II) 1982 928 Silver (sold) 
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04-09-2020, 05:52 AM
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Join Date: Jun 2014
Posts: 800
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I believe the OP is speaking of the HVAC fan instead of the radiator cooling fan system.
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04-10-2020, 11:31 AM
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curtisr
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Quote:
__________________
1977 924 Guards Red (parted and sold) 1987 924s Alpine White (sold) 1987 924s Kopenhagen Blue (my Lowencash tribute track car -- sold) 1987 924s Garnet Red (currently becoming Lowencash II) 1982 928 Silver (sold)
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04-10-2020, 04:04 PM
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Liam
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Sorry for the very late response. As I work on the car and discover more problems, this kind of moved to the backburner as the car isn't even registered yet because DMV is closed for COVID.
Turned out to be the easiest fix ever.... The blower was seized, which was causing the resistor to get very hot. I turned it by hand, applied a little grease, and voila! I then got blasted in the face with all the crud that was in the vents 
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05-04-2020, 05:56 PM
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E92
944
1982 Porsche 928
Uhhh, 'Sweetie'?! Never thought about giving it a 
Soon to be a race car (done)
Whatamess
Lowencash -- VARAC tribute/race car
DD
