WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-251.

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WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-251.

Postby oldschool1 » Tue Apr 26, 2016 11:11 pm

WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-251.

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March 23, 2012, I replaced the driver's side window motor in my black 1990 Lincoln Mark VII LSC with a Dorman 742-251. Four years later and it's still going strong. Sadly enough, the OEM passenger side motor gave up. I'm off to AutoZone for the 742-250.
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Re: WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-25

Postby Sir Tonk » Sat May 07, 2016 11:27 pm

Did the same one my driver side and, of course, the passenger went out soon after. Looks like they've both been replaced before, the holes are drilled out and they came out easily enough. Biggest headache is getting the door panel off without damaging the area by the handle.

Of note, these move faster than the OEM Ford motors. It's the same unit in my '78 Mercury and the driver side is now like twice as fast as the other three (all four were the originals and the other three are still going strong)
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Re: WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-25

Postby oldschool1 » Sun May 08, 2016 4:41 am

Sir Tonk wrote:... Biggest headache is getting the door panel off without damaging the area by the handle. ...

Funny you should mention that.
We actually discussed this aspect of the motor repair/replacement. My suggestions were to either remove the handle before completely removing the trim or to rotate the panel, forward edge down, before maneuvering the panel around the handle for removal.

For the novice, the most difficult part will be getting the new screws started without dropping them inside the door and then, resisting over torqueing them.
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Re: WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-25

Postby robertbweltzien » Tue Jun 27, 2017 4:13 pm

Good work, Sir Tonk. I thought I'd throw on a belated comment. As long as they don't stick in the down position you're good to go. I had two in a row that did that, must have been a bad batch. I went with the ACI motors since they are identical to stock but they operate much, much slower. Still going strong after one year.

Bob
Medicine, Biomedicine, Mechanics and MK VIIs
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Re: WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-25

Postby Socks » Sat Jan 13, 2018 1:13 pm

I went with the ACI motors since they are identical to stock but they operate much, much slower. Still going strong after one year.

Do you have a part number for where you got the ACI motor?
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Re: WINDOW MOTOR REPLACEMENT USING DORMAN 742-250 AND 742-25

Postby oldschool1 » Sun Jan 14, 2018 2:42 am

Hi Socks,
Post up a part number. The Club is grateful for posts from people with hands-on experience and you seem to be the first one to post about this particular product.
DETAILS PLEAS.
Thank you for keeping a Lincoln Mark VII on the road!
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