67 232 Auto 3rd gear issue

It's a 67. It has the modulator and the electric kickdown.

Thank you very much everyone for your responses, I just purchased a modulator from RockAuto and I'm sure I need to do a rear main seal since the engine is moister than an oyster. Hopefully this will resolve my high rpm travels! You guys never fail to resolve my issues, next up is figuring out where the heck I'll find a new vacuum wiper motor since I drove to work like Ace Ventura style. But seriously, you guys are the best.

Do some Internet searching to find your nearest AMC club?

'AMO' website is a good place to start.

Your local club members should be able to guide you to an actual AMC mechanic.

Of course it will be good to buy a '67 American Motors Technical Service Manual for you to learn more about your car's mechanical component parts. -the book will pay for itself when you make your first repair.

For '67 232 inline six, your transmission is a '67 American Motors 'Shift Command' aluminum case automatic.

(basically all the non-AMCer 'transmission guys' call it a Borg Warner Model 35... which is technically incorrect; all those later models with n0 downshift cable but with electric kick down instead are Models #41 through 44)

FYI, Volvo used this same automatic transmission in their cars through '77 and those cars earned an excellent reputation for durability.

-The advice the other man gave you is straight out of 'the book':

'No upshift from 2nd to 3rd' = 1) check downshift switch and solenoid 2) & 'stuck governor'

You will need to have your rear main seal replaced if that's where the leak really is coming from... it could be from multiple sources. An oil leak at the valve cover makes the whole engine look like 'it's leaking like a sieve'... the leaks won't fix themselves, they will only get worse = the car needs repairs if you wanna keep driving it.

If you had your own Technical Service Manual, you'd realize how difficult it will be to change the rear main seal = that's not an easy job.

Again, this is why I'd recommend you seek a local mechanic through your nearest AMC club.

amcenthusiast wrote: Do some Internet searching to find your nearest AMC club? 'AMO' website is a good place to start. Your local club members should be able to guide you to an actual AMC mechanic. Of course it will be good to buy a '67 American Motors Technical Service Manual for you to learn more about your car's mechanical component parts. -the book will pay for itself when you make your first repair. For '67 232 inline six, your transmission is a '67 American Motors 'Shift Command' aluminum case automatic. (basically all the non-AMCer 'transmission guys' call it a Borg Warner Model 35... which is technically incorrect; all those later models with n0 downshift cable but with electric kick down instead are Models #41 through 44) FYI, Volvo used this same automatic transmission in their cars through '77 and those cars earned an excellent reputation for durability. -The advice the other man gave you is straight out of 'the book': 'No upshift from 2nd to 3rd' = 1) check downshift switch and solenoid 2) & 'stuck governor' You will need to have your rear main seal replaced if that's where the leak really is coming from... it could be from multiple sources. An oil leak at the valve cover makes the whole engine look like 'it's leaking like a sieve'... the leaks won't fix themselves, they will only get worse = the car needs repairs if you wanna keep driving it. If you had your own Technical Service Manual, you'd realize how difficult it will be to change the rear main seal = that's not an easy job. Again, this is why I'd recommend you seek a local mechanic through your nearest AMC club.

So, it ended up being a combination of both the modulator AND the kickdown switch, I just replaced the modulator and it was still shifting bad, I then removed the kickdown switch wires again and it's shifting beautifully, thank you very much for the help. And, if anyone is having the same issue I suggest the  https://www.rockauto.com/en/catalog/american+motors,1967,rebel,3.8l+232cid+l6,1318205,transmission-automatic,governor+/+modulator,8500 - TRANSMAXX 206160 for the modulator! Again, I am extremely grateful for all of your help.