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Old 11-17-2013, 02:39 PM
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Zacharias Zacharias is offline
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Join Date: Apr 2010
Location: West Quebec
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Quote:
Originally Posted by minsk View Post
its drops from 20hg to basically nothing. I did the test on the black line that goes directly to the transmission. is there any way to test the modulator?
See SDBlue's answer. It is more likely a nick in the line or a leaking modulator cap than the modulator itself.

You can access the modulator cap from under the car on the passenger side. Take a short(er) length of vacuum tubing from somewhere else and hook it up to the modulator and the mityvac and see if it holds vacuum.
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