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Discussion Starter #1
I've got a 99 Eldorado ETC with a drivers window intermittant problem. It will sometimes go up and down fine especially if I bring it down and up right away. If I bring it down and leave it down for say 10 seconds, it fails to go up immediately. I can then wait and try it later or operate the passenger window then the drivers. It will usually go up 2 inches and then I go through the same routine until I get it all the way up.

My friendly mechanic has thrown parts at it (a new motor and a new drivers switch) but they have not helped. Its getting cold and car washes are not fun.

Can anyone provide me with schematics and testing procedures?

Thanks
Richard
 

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94 Eldorado, and a 99 ETC
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It really sounds like a bad switch to me... You know when it works properly how it goes down all the way if you press the switch for a second rather than quickly. Its probably getting stuck like that. If I were experiencing this problem, I would take the switch apart and find out whats wrong with it. But it would be easier to buy a new switch. You can test if its the switch by simply buying a little cheap one and wireing it in place, if it works with the cheap one, you know its the switch. If its really not the switch then I would suspect the wiring to the motor form the switch. there should be three wires: one positive and two leads. I'll call them lead1 and lead2 because I don't know the colors.

To go down the switch will connect the positive to lead1
To go up the switch will connect the positive to lead2

It may have something wrong with lead2.

Hope this helps.
 

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Discussion Starter #3
I thought it was the switch too and thats why I replaced it. The window malfunctioned the same after the replacement so I've kind of ruled the switch out.

Thats why I'm asking for the schematic and testing procedures. I've got an ohmeter and thought I could do a complete job of testing the wires and circuits rather than throwing more expensive parts at the problem.

Thanks for the input though.

Richard
 
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