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Registered
Join Date: Mar 2003
Location: Charlottesville Va
Posts: 5,865
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A/C on/off switch fix?
First the defrost switch and then the a/c on/off have recently failed to "lock in". Both still function if held. Is there a fix, or do I buy a whole new used unit, or can I cowboy something with a piggybacked switch for the a/c compressor somewhere?
I'm more or less a 911 guy, so forgive me if this is common and I didn't find it with a search....
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Greg Lepore 85 Targa 05 Ducati 749s (wrecked, stupidly) 2000 K1200rs (gone, due to above) 05 ST3s (unfinished business) |
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11-17-2006, 04:38 AM
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Registered
Join Date: Jun 2004
Location: south Africa
Posts: 209
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The aircon on/off switch also controls the thermostat on/off. The thermostat is a thin tube filled with what looks like alcohol. My tube broke, and I replaced it with a cheap aftermarket item, connected the two wires and installed a seperate switch. My aircon clutch only engages now if I "swith on" the thermostat. The big knob that controls the fan and that used to control the thermostat now only controls the fan (two settings).
When you gas is low, your aircon will also not engage.
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1983 944 RHD Original. Uses all my spare cash! 1947 Morris Sold 1972 Benz Sold 1975 Benz Sold 1976 Benz Sold 1977 Benz Sold |
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11-17-2006, 04:52 AM
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Registered
Join Date: Mar 2003
Location: Charlottesville Va
Posts: 5,865
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The issue here appears to be mechanical within the switch-you push it in and it doesn't "lock" in place, altho it works electrically and energizes the system.
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Greg Lepore 85 Targa 05 Ducati 749s (wrecked, stupidly) 2000 K1200rs (gone, due to above) 05 ST3s (unfinished business) |
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11-17-2006, 05:38 AM
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Registered
Join Date: May 2004
Location: Brandon FL
Posts: 371
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it gets pretty common with 20 year old cars. There are two types of a/c control units, with and without replaceble switches. If you have the replacable one, you can purchase new switches and pop them in. If not, I taken the fixed switches apart and replaced the small plastic part that wears with ones from other dead units.
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Rick 99 996C4 06 525XI 87 944S - Sold 77 924 - Sold |
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11-19-2006, 05:28 AM
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