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transmission vacuum modulator

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Old Mar 11, 2007 | 11:36 PM
  #1  
pedrorairez's Avatar
pedrorairez
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transmission vacuum modulator

have a 1975 f150 360 v8 automatic can anyone tell me where the transmission modulator hose connect to under the hood in the engine compartment dont know if I have it in the place my gears arent shifting like they suppose too and after a while just doesnt shift anymore starts off good but then starting shifting crappy and more accelaration i give it doesnt go any faster.
 
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Old Mar 12, 2007 | 12:06 AM
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The vacuum line goes to the vacuum tree that all the other vacuum lines go to.
 
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Old Mar 12, 2007 | 03:04 AM
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Remove the line from the modulator valve. If there is any transmission fluid in it, then it is bad.
 
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Old Mar 12, 2007 | 03:46 AM
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Originally Posted by pedrorairez
have a 1975 f150 360 v8 automatic can anyone tell me where the transmission modulator hose connect to under the hood in the engine compartment dont know if I have it in the place my gears arent shifting like they suppose too and after a while just doesnt shift anymore starts off good but then starting shifting crappy and more accelaration i give it doesnt go any faster.
D4TZ-7A377-A Vacuum Modulator (Motorcraft TM-30)
 
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Old Mar 12, 2007 | 05:10 AM
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From: va.
the one on my 79 hooks up to a port in the front of the manifold . when i first put the transmission in i hooked it up to the tree with the brake booster and it would not shift right.
 
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Old Mar 12, 2007 | 12:00 PM
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Probably a vacuum leak in the booster or someone mis routed the PCV system. The tree is where it belongs.
 
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Old Mar 12, 2007 | 12:43 PM
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For an illustration of the vacuum tree..see this page.
Even though the engines are different, the vacuum tree position should be the same.


http://www.clubfte.com/users/mil1ion...mDiagrams.html
 
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