C-4 no reverse
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Fleet Mechanic
Joined: Sep 2012
Posts: 1,608
Likes: 53
C-4 no reverse
1975 f100, 302 with a c-4. My daughter uses it as a daily driver.
Today she said she had no reverse. Drove it home fine. Shifter works fine and moves through all the gears. no loose bolts in the linkage. I have tried to manually shift into reverse, but nothing happens. not one bit of noise.
Trans fluid is where it should be, but does smell a bit burnt. She has never complained that the tranny was slipping. I have read about the low reverse band may be the problem. Would the modulator have anything to do with it? Not that I have touched it, but is it worth changing?
Thanks
Today she said she had no reverse. Drove it home fine. Shifter works fine and moves through all the gears. no loose bolts in the linkage. I have tried to manually shift into reverse, but nothing happens. not one bit of noise.
Trans fluid is where it should be, but does smell a bit burnt. She has never complained that the tranny was slipping. I have read about the low reverse band may be the problem. Would the modulator have anything to do with it? Not that I have touched it, but is it worth changing?
Thanks
FTE Legend
Joined: Sep 2003
Posts: 54,031
Likes: 2,409
From: NY and VA
Might try adjusting the bands first.
Pull the vacuum line from the modulator, if fluid runs out the line the mod. definately needs replacing.
Should swap ok. Where is the N/S switch located? On the column or trans?
Pull the vacuum line from the modulator, if fluid runs out the line the mod. definately needs replacing.
Should swap ok. Where is the N/S switch located? On the column or trans?
FTE Legend
Joined: Sep 2003
Posts: 54,031
Likes: 2,409
From: NY and VA
https://mustangforums.com/forum/clas...nds-on-c4.html
Usually replacement of the lock nut is recommended because it is also a seal. Just to try and see if it fixes the problem, I wouldn't worry about replacing it.
Usually replacement of the lock nut is recommended because it is also a seal. Just to try and see if it fixes the problem, I wouldn't worry about replacing it.
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Fleet Mechanic
Joined: Sep 2012
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I tried to adjust it according to the link and the ford repair manual. The adjustment shaft just kept going in and never hit the 10 ft pounds. The shaft was very easy to thread in. I concluded that something happened inside, so I have started taking the transmission out and am bringing it to a shop for repair. I will let you know what they find
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Cargo Master
Joined: Nov 2011
Posts: 3,354
Likes: 49
From: Great American SouthWest
I tried to adjust it according to the link and the ford repair manual. The adjustment shaft just kept going in and never hit the 10 ft pounds. The shaft was very easy to thread in. I concluded that something happened inside, so I have started taking the transmission out and am bringing it to a shop for repair. I will let you know what they find
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LOL, I agree with PBY.
A 'bit burnt' smell is not good. (Mind you, neither is having no reverse!)
The colour of the oil would gave an indication of what's what, but that said, a rebuild will be more fun !
Yes, you really can do the rebuild yourself.
You'll need all torque settings and adjustment procedures, in addition to the parts.
A 'bit burnt' smell is not good. (Mind you, neither is having no reverse!)
The colour of the oil would gave an indication of what's what, but that said, a rebuild will be more fun !
Yes, you really can do the rebuild yourself.
You'll need all torque settings and adjustment procedures, in addition to the parts.
Cargo Master
Joined: Nov 2011
Posts: 3,354
Likes: 49
From: Great American SouthWest
There are a couple recent threads by guys that have rebuilt their transmissions. I think LaserMike did his. There's a video on eBay that's a step by step full rebuild. Parts are readily available.
If you can't find the links, I'll post them up in a bit.
If you can't find the links, I'll post them up in a bit.
Thread Starter
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Fleet Mechanic
Joined: Sep 2012
Posts: 1,608
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Guys, Don't call me a sissy, but this transmission rebuild is out of my league.
I took it to a rebuilder. He told me the low band was completely broken. Third was about to go. Going to see the parts today. Hopefully ready in a day or so.
Thanks for the help
I took it to a rebuilder. He told me the low band was completely broken. Third was about to go. Going to see the parts today. Hopefully ready in a day or so.
Thanks for the help
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