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Vacuum Modulator

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Old Mar 13, 2014 | 03:11 PM
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Vacuum Modulator
I was going to adjust shift points through my vacuum modulator today. When I climbed under the truck and pulled the rubber hose that connects the hard vacuum line to the modulator, transmission oil started pouring out. I'm guessing here, but I don't think it should do that. Can anyone confirm whether or not this is suppose to happen?

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Old Mar 13, 2014 | 03:30 PM
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The diaphragm in the modulator separates fluid from vacuum, so I would assume you have a hole in the diaphragm and the modulator should be replaced.
 
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Old Mar 13, 2014 | 04:01 PM
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That's exactly what I suspected. Thank you Gavin.
 
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Old Mar 13, 2014 | 04:25 PM
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That may explain a lot of why it's shifting oddly. I hope a new modulator solves all of that for you.
 
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