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Old 02-08-2008, 08:57 AM
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Join Date: Sep 2007
Posts: 4
1974 450 SEL Vacuum Door Locks

Can anyone tell me how to disable the vacuum door locking system? It has stopped working properly. Thanks.

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Old 02-08-2008, 09:21 PM
wbain5280's Avatar
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Join Date: May 2001
Location: Northern Va.
Posts: 3,386
You don't need to disable it, just track down the leaks. Little vacuum lines run though the car to operate the vacuum valves. You could also use the vasuum pump from a W126, located in the truck with the spare tire.

click on section 80


Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL


Not part of the in-crowd since 1952.
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Old 10-16-2008, 11:11 PM
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Join Date: Jan 2007
Posts: 36
If you look under the hood you'll see two yellow vacuum tubes coming from the firewall on the drivers side just next to the fuse box. One tube has a stripe and one is solid yellow. Just remove the solid tube from it's rubber connector and plug it off. Also plug the connector where it came out. I had to do this until I had time to fix the leak, which was in the switch in the drivers door.

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