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1979-2004 V6 Mustang Tech Discussions

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Unread 05-12-2012   #1 (permalink)
mustangfan651 is offline Apprentice

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Default Rear Window Will Not Go Down

I have a 2000 convertible mustang and the passenger side rear window will not go down I had this problem for a 3 days with the driver side rear but it started working again with no problem when ever I push the down button for the rear window the rpms go down a bit and when I let off the rpms go back up to normal idle I only care because summer is coming and driving with the windows up and top down looks ******* retarded and if it help that car did not do this till a new top was installed in the winter
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Unread 05-13-2012   #2 (permalink)
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My 99 has the same problem but for $3700 trade in its gona be my local Ford dealers problem come Monday :P

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Unread 05-13-2012   #3 (permalink)
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FWIIW, the Mustang's power windows are protected by a circuit breaker in the Battery Junction Box and the window motor itself. The circuit breaker is an automatic reset device. This explains why the windows can quit working and then as if by magic start working again.

If the RPM's drop a ton during operation, likely this means the motor is drawing too much current. This could be from the window binding or bad motor bearings. I would start first with an inspection. Look for evidence of water damage.

Not a bad idea to check the battery and battery cables to be through. Are they clean and tight?
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Unread 05-13-2012   #4 (permalink)
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Yes the battery is very clean my terminals are in great shape and I ruled out the window switch because I took the whole thing apart and cleaned it with electrical cleaner so I guess all that leaves it to is the motor I will check that out you dont think it's a wiring problem right with the rpms dropping a little bit when I hit the down button ??? and then the only thing that gets me is the motor never showed any signs of failing never a noise or anything?????
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Unread 05-13-2012   #5 (permalink)
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Quote:
Originally Posted by mustangfan651 View Post
you dont think it's a wiring problem right with the rpms dropping a little bit when I hit the down button ???
Allow me to answer your question with a question. Do the RPM's drop when the other windows are used?

Typically a wiring problem would either be no opperation or slow operation due to high resistance connection.

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Originally Posted by mustangfan651 View Post
then the only thing that gets me is the motor never showed any signs of failing never a noise or anything?????
OK, this is a convertible right? Water in the body cavities is always a problem in convertibles. Especially if there are any clogged body drain holes.

Besides, it's a car right? Cars break down all the time without warning. A part doesn't owe you a pre-warning.

Bottom line, you will never KNOW why it quit working until hands and eyes have been laid on it.
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Unread 05-13-2012   #6 (permalink)
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I don't think the rpms drop when you other windows are used but I will check for me as long as it's not a wire problem I'm happy swapping out a window motor is cake lol
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Unread 04-27-2013   #7 (permalink)
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Default Rear window

My pass. side window started doing that..If I let car sit for a while it starts working again..Will check wiring next time I fill convertible reservoir up..
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