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WARP TEN · 09-02-2013

Well I followed all your bits of advice and fixed the issues with my window and A/C switches this weekend. Took a couple of hours. Sorry I did not take any pictures but as many noted it was fairly straight forward.

The window switch trim panel holding the switches comes off easily with 2 screws and the only tricky part was once the switch was off the trim panel at the workbench it was hard to actually open the switch. There are about five little plastic snap fasteners that had to all be carefully pried away from the switch case simultaneously. I did it by holding each open with a little sliver of wood cut from the thin end of a shim. Once all were held open I was able to carefully work the switch case apart without breaking the tabs. Once off I found little rocker contacts that were moved by the switches. Lifted out, several of the contacts showed some arcing residue. One in particular was very black and rough; I presume this was the one for the passenger side that wouldn't let the window go up. I used 400 grit wet dry sandpaper on them and then polished with a stiff brush on a Dremel tool (The contacts attached to the switch are a bit hard to get at otherwise). A little grease where the switches rub on the contact levers and it all went back together easily. They seem to now work fine.

The A/C control head also came out in a straight forward manner following instructions in the FSM. One hint not noted it the manual: As a first step to removing the console trim panel, remove the hinged console lid (four hex screws). Otherwise it is hard to get the trim piece off and impossible to get it on again. On the workbench, the A/C control head comes apart easily with small hex head screws. The switch mechanism is interesting: It is a rubber pad behind the switches that, when a button is pushed, pressed what looks like a small piece of carbon against a small design on a circuit board. This apparently completes a circuit. Unlike the window switches, it was hard to tell why the switches were not functioning all the time. I carefully wiped the carbon points and the circuit board with contact cleaner a (very) lightly scuffed the contact on the board with 400 grit w/d sandpaper. It went back together easily and also seems to work fine now.

Thanks for all the helpful advice. --Bob

09-02-2013	#13
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,153	Re: AC switches internittent--fixed Well I followed all your bits of advice and fixed the issues with my window and A/C switches this weekend. Took a couple of hours. Sorry I did not take any pictures but as many noted it was fairly straight forward. The window switch trim panel holding the switches comes off easily with 2 screws and the only tricky part was once the switch was off the trim panel at the workbench it was hard to actually open the switch. There are about five little plastic snap fasteners that had to all be carefully pried away from the switch case simultaneously. I did it by holding each open with a little sliver of wood cut from the thin end of a shim. Once all were held open I was able to carefully work the switch case apart without breaking the tabs. Once off I found little rocker contacts that were moved by the switches. Lifted out, several of the contacts showed some arcing residue. One in particular was very black and rough; I presume this was the one for the passenger side that wouldn't let the window go up. I used 400 grit wet dry sandpaper on them and then polished with a stiff brush on a Dremel tool (The contacts attached to the switch are a bit hard to get at otherwise). A little grease where the switches rub on the contact levers and it all went back together easily. They seem to now work fine. The A/C control head also came out in a straight forward manner following instructions in the FSM. One hint not noted it the manual: As a first step to removing the console trim panel, remove the hinged console lid (four hex screws). Otherwise it is hard to get the trim piece off and impossible to get it on again. On the workbench, the A/C control head comes apart easily with small hex head screws. The switch mechanism is interesting: It is a rubber pad behind the switches that, when a button is pushed, pressed what looks like a small piece of carbon against a small design on a circuit board. This apparently completes a circuit. Unlike the window switches, it was hard to tell why the switches were not functioning all the time. I carefully wiped the carbon points and the circuit board with contact cleaner a (very) lightly scuffed the contact on the board with 400 grit w/d sandpaper. It went back together easily and also seems to work fine now. Thanks for all the helpful advice. --Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough"