I have a 1999 Ford Crown Victoria that I bought new & has always had a very slow driver's side window that sometimes stops part way up.
 

Since the day I bought it, the driver's side front window has been horribly slow and sometimes stops at or just below the midpoint (the other windows are slow too, but not as bad as the driver/front).

While it was under warranty, Ford "fixed" it three times claiming that they either reseated the window itself saying that the plant made the seal too tight, or the window regulator was too loose, but neither "fix" helped.

I tried grease in the window channel, but that didn't help, either.

The battery is new and registers 12.5 volts cold; while any window moves with the engine on, it goes up to 14.5 volts, so I doubt it's the battery or alternator (i.e., it's getting plenty of juice.)

I thought it might be an over-powered fuse, but lower-power fuses blew out almost immediately.

I posted this on the "rec.autos.tech" newsgroup, but there was only one response and it involved greasing the window rail.

I am mechanically and electrically inclined, but am totally baffled by this.

Any constructive suggestions would be welcome.

Steffi Kaizun, Espici_2@att.net

 
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