trans modulator
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Junior User
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trans modulator
I just installed a new modulator in the cruise-o-matic trans on my 67 truck. It is still shifting hard. Is there an adjustment on the modulator? You have to let off the gas and get back on it to get the tranny to shift. Maybe there is another problem? You'r guys' help will be appreciated.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
The C-O-M is not a soft shifting tranny like the C6. Without driving the truck I don't know exactly what you call hard shifting, but I recall a few years back when I had one it was a bit sharper than the C6 in my other truck.
John
John
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
I just installed a new modulator in the cruise-o-matic trans on my 67 truck. It is still shifting hard. Is there an adjustment on the modulator? You have to let off the gas and get back on it to get the tranny to shift. Maybe there is another problem? You'r guys' help will be appreciated.
The valve used with MX C-O-M = C1AZ7A377B (Motorcraft TM1) is not the same as the one used with a C4/C6 (C4AZ7A377B-Motorcraft TM2).
Did you remember to install the 2.867" x 1/8" diameter shift rod (C2AZ7A380A) that fits inside the modulator?
The trans will not shift properly without it.
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Junior User
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I found the modulator replacement for the C-O-M that you suggested, Number. As for the hard shifting, it seems to have a hard time deciding to shift from first to second if I get on it. Then it can't decide which gear would be better at 30 mph. I have to get this truck running well. I love to drive it and you won't believe how many turning heads I get when I am on the road.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Why?
Because I've had the same 1965 F100 since I bought it new in March 1965!
It didn't garner much attention till it passed 30 years old.
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