Vaccuum modulator replacement? 1980 C6
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Senior User
Joined: Dec 2006
Posts: 250
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From: South Western Ontario
Vaccuum modulator replacement? 1980 C6
The vaccuum modulator leaks transmission fluid when I pull the hose from it. I'm going to get a new one right now. Could someone explain how to install the new one.
Is fluid going to come pouring out?
Do I need to purchase anything else to complete the install?
Thanks for the help.
Is fluid going to come pouring out?
Do I need to purchase anything else to complete the install?
Thanks for the help.
FTE Legend
Joined: May 2008
Posts: 56,542
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From: In my own world
undo the bolt and remove the clip. yes some fluid is going to come out, not a lot. don't loose the rod . clean yours to get the #'s off, there's like 4 different ones.when you put it back, make sure to replace the rubber line on both ends, the oil satureates the rubber, and it will suck it flat causeing erratic shifts. there is a adjustment for the shifts inside where the vaccume line hooks on,use a small screwdriver, in for firmer shifts, out for softer
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Senior User
Joined: Dec 2006
Posts: 250
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From: South Western Ontario
Thanks for the info, I just got one. I'm hoping its got the same numbers. Should I just put the pin in the new one and reinstall, and see how it shifts before I make any adjustments
FTE Legend
Joined: May 2008
Posts: 56,542
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From: In my own world
yes, the adjustment is for personal preferance of where it shifts. I usually put them in then go for a spin. catch a hill or two, stomp it a couple of times, etc. if your pleased, ok, if not, just pull off the hose, and turn 1/4 turn at a time. in for firmer[quicker] out for softer [slower]
Moderator
Joined: Jan 2001
Posts: 56,984
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From: Virginia
When I bought one it had color bands on it instead of numbers. You should have been through all of this when you went to the parts store if there was a problem. If they just gave you one, stick in on and see what happens.
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Senior User
Joined: Dec 2006
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From: South Western Ontario
stuck it on, lots of fluid came out. It has lengthened the time between shifts which is nice. Still get a clunk when I come to a stop sometimes. I am going to bring it to the mechanics for a band adjustment, I dont want to break anything.
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Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Ford used bands of color to ID modulator valves, not numbers.
There can be one color band, two or possibly three.
The early valves (thru 1970) were not marked because there were only three: One for C-O-M, one for F-O-M, the 3rd was used for the C6 & C4.
No number on the pin....cuz....its diameter is waay smaller than a toothpick!
There can be one color band, two or possibly three.
The early valves (thru 1970) were not marked because there were only three: One for C-O-M, one for F-O-M, the 3rd was used for the C6 & C4.
No number on the pin....cuz....its diameter is waay smaller than a toothpick!
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
After 1970, the factory modulator valves have color bands.
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