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  '64 1/2 to '73 -- The Classic Mustang
  vacuum modulator line

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Author Topic:   vacuum modulator line
bluetech
Gearhead

Posts: 254
From: Far and Away
Registered: Feb 2001

posted 01-16-2003 12:53 AM     Click Here to See the Profile for bluetech   Click Here to Email bluetech     Edit/Delete Message   Reply w/Quote
This might sound stupid, but i need to know If I drive the car with the vacuum tube disconnected, what happens? Thanks.

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Hemikiller
Gearhead

Posts: 404
From: Clinton, CT
Registered: Feb 2002

posted 01-16-2003 07:19 AM     Click Here to See the Profile for Hemikiller   Click Here to Email Hemikiller     Edit/Delete Message   Reply w/Quote
The Vacuum modulator supplies the tranny with the info about the load your car is under. With the modulator disconnected, it will assume, with 0 vacuum present, that you have the pedal to the metal, and will shift on the governor. This could be anywhere from 4500 rpms to 6000 rpms, depending on the governor settings.

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SteveLaRiviere
Administrator

Posts: 34763
From: Saco, Maine
Registered: May 99

posted 01-16-2003 08:53 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
...and you'll have a vacuum leak.

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bluetech
Gearhead

Posts: 254
From: Far and Away
Registered: Feb 2001

posted 01-16-2003 06:35 PM     Click Here to See the Profile for bluetech   Click Here to Email bluetech     Edit/Delete Message   Reply w/Quote
Looks like the stock trans will be in a lot of stress That's one big leak, Steve Thanks.

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