Is Our C4 Transmission Done? 

Two things. 1. Maybe the vacuum line has a crack in it . 2 Behind the modulator there's a pin that the modulator pushes on, it can fall out or it's to short. I think if the modulator is changed out for a new one that pin may need to be checked for length, if I remember right I had to change mine to a longer one. I used a 8d finish nail cut to length. If I remember when you put the modulator in it stops 1/8 to 3/16" short and last bit is preload.

Oil build up and gunk all over the bottom is not just on my car. THANK GOD! lol. I thought it was just mine. Love this channel. It's for the average Joe. Not show car gurus with $100k cars that are cleaner than my house.

Welcome to the wonderful world of antique cars! If it's not one thing it's another.

Servo piston leak by can cause forward gears to not work.

With all the work the last owner did, is it possible they put a shift kit in it? A heavy 2-3 shift spring could cause that. Not building enough fluid pressure below 3k rpm.

Enjoyed the video; it's quite common to get an uncommon education here. Most of us would not suspect that a slushbox originally installed in a different car would have slight though meaningful differences that could make a noticeable difference. Thanks to this video, I'll reconsider a few ideas I had. You guys were probably thorough enough to check the linkages, but when I was young enough to still have a full head of hair 🤣, the selector linkage in my '68 Galaxie broke. Did youthful exuberance play a role? 😇 Nah. Great to see the Fried Green Tomato out on the road. 😎

D.O.P.E.😆

Nice 😊

I know this will sound crazy, but pour a qt of marvel mystery oil in the transmission and drive it. I’ve used it in sluggish transmissions, that have set up for a while and exhibit shift anomalies like this, for years with decent results. Afterward, I do a pan service with filter, and substitute one of the qts of fluid for another qt of the MMO. It’s a cheap swing at it. I’m not a mechanic in a bottle guy, but MMO has helped me out many times.

Truly enjoying these videos, short, great content and well edited/ produced as with great content Question: do we know @ what ( on average) RPM a C4 should shift at? My C4 seems to shift early, need to confirm with a tach, is this simply the modulator valve? My tranny kick down ( passing gear) is currently disabled; does this affect shift points under hard acceleration? Great work, I appreciate what all of you do

Shift modulator????

I know this is totally not in the same area code is what you're talking about now but I'm new at this and I don't know how to work all the things but I have a duel 4 Barrel that runs off the the back carb but has a electric choke on the front carburetor doesn't it need the electric choke on the back carburetor since that is the one that it runs off of

Modulator problem! I had exactly the same problem on the same transmission... too long to shift from 2 to 3!

Could be the governor..or modulator needs adjusting or a vac leak..

My original c4 out of my Torino has a 2 bolt boss where the shifter cable bracket bolts to.The seat belts look like a new updated version. Im looking to update mine. Do you have any info on those belts . A bad modulator can cause delayed shifts. Also if your passing gear kickdown is out of adjustment it wont shift into 3rd.

The C4 in our 65 Mustang is a green dot. The first drive position starts in second for traction in snow and ice.

Could be wrong valve body, take apart, clean, check for stick/binding, change mod first....@ 9;30.thanks Cam, great minds thimk alick.

Who owns the yellow one parked in front of the house?

Work on that 63 Galaxie!!!!!!!

I dont know c4's but my 76 highboy had a c6 lost 2nd gear completely a local 4x4 shop talked me into a $999 shift kit turned out to be a nightmare every time it shifted through gears jerked me around in the seat they thought my daily driver was for truck pulling

Is that chip

The Grand Torino is a midsize car

Man drain those elbows man jesus