Vintage Mustang Forums banner
Cancel

Won't shift w/o racing it.

594 Views 3 Replies 2 Participants Last post by  Guest, 
G
My C-4 will not shift between gears unless you really race the engine, and then it will dump into the next gear rather rough. I have heard the modulator may be bad, or the vacuum may not be there, I'm ready to check it out, and I want to know where to start. I want to do some crusing w/o wondering if it will shift! Tranny rebuild is not out of the question, right? (Leaks all over too)

1966 C-Code Convertible, 59 Edsel Villager
Charlotte, NC
New Cars Have No Soul.
Save Share
Reply Quote
1 - 4 of 4 Posts
Mach1Pilot

· Registered
Joined
·
3,370 Posts
#2 ·
Tranny rebuild is definitely not out of the question, but also just check the fluid. If it's leaking, low fluid can cause the same symptoms.

Our Ponies
http://www.ultranet.com/~bpratt/images/Mach1painted.jpg http://www.ultranet.com/~bpratt/images/65vert.jpg
 
Opentracker

· Supporting Vendor
Joined
·
3,951 Posts
#3 ·
Your problem is the vacuum modulator. Either the vacuum line has came off or
the modulator is bad or not adjusted properly. See if the vacuum line is in good
condition, if it is, see if the modulator has a screw in the back where the line goes
on. Turning it in raises the rpm of the shift. Good Luck!
 
G

·
Discussion Starter · #4 ·
Thanks a ton. I'll check it out tomorrow and keep my fingers crossed.
Thanks
T


1966 C-Code Convertible, 59 Edsel Villager
Charlotte, NC
New Cars Have No Soul.
 
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Vintage Mustang Forums
A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more!
Full Forum Listing
Explore Our Forums
Vintage Mustang Forum Mod and Custom Forum Want Ads Concours Forum Build Forum
Top