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Registered
Join Date: Nov 2025
Posts: 2
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Electric Windows 911sc -1980
Both electric widows will not work on my Porsche 911 sc , 1980 model. I've used a multimeter to confirm the fuse is not blown and that 12v of power is getting to each of the 3 window switches. I've replace the relay. I also replaced the drivers side window switch. any suggestions for how to repair?
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11-13-2025, 10:58 AM
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Registered
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Sounds like you need to test/replace the motors if you've confirmed everything else works up to them.
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11-15-2025, 10:17 AM
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PCA Member since 1988
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Test for 12V at the motor terminals when you press the switch up and down.
__________________
1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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11-16-2025, 12:07 AM
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Lash
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Dont forget to check the motor ground. I'm going to assume that your 911 may have sat for a while since niether window is working. I have seen the ceramic bullet fuses pass 12v but with heavy corrosion (resistance) on the tips of the fuse can reduce current flow, and those motors need the amps to operate. So clean fuse holder contacts and wire brush or replace the fuse.
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Lash 1963 356 T-6 Normal Coupe 1972 911 T Coupe ..... Sold 1972 911 S Targa ...... Sold 1980 911 SC Coupe Weissach |
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11-16-2025, 04:52 PM
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