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  #1  
Old 11-25-2019, 10:16 PM
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W126 vacuum modulator

Having very hard shifts and going to try and adjusting the modulator. I remember there being a thread on this website i believe. I cant seem to find it though. It went through the entire process and listed recommended pressures for the varying transmissions.

I don't have my model yet i plan on doing the job this week sometime but wanted to have the necessary information before i started. I pretty much know the process of doing it mostly need the pressure adjustments. If anyone has them or can point me in the right direction greatly appreciated.

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Old 11-26-2019, 12:40 AM
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Location: NE Pennsylvania
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Quote:
Originally Posted by Whaling View Post
Having very hard shifts and going to try and adjusting the modulator.

modular pressure by your transmission model:


Today's Atf has different friction modifiers than original Dexron 3 (NLA) so setting it by feel on a smooth/slightly firm side (less wear) is not a bad idea. Especially since it doesn't require any gauges/fittings
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Old 11-26-2019, 01:46 AM
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Wow this seems to be exactly what i needed. Just hope my transmission is on the list i should be getting to it tomorrow hopefully. I will also definitely take your advice on setting it by feel i however have all the tools so i think ill get it in the ballpark first with the gauge.

From what i have read before CCW=less psi=smoother correct?
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Old 11-26-2019, 01:54 AM
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Quote:
Originally Posted by Whaling View Post
CCW=less psi=smoother correct?

yes

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