I have a C4 transmission in a custom show truck. Doesnt shift right

Asked by Jun 20, 2016 at 12:37 PM about the 1965 Ford Mustang

Question type: Maintenance & Repair

The Modulator started leaking so I changed it,  Now it shifts into 2nd gear very sluggishly at low rpm.  higher rpm delays shift point very little.  it will not shift into 3rd gear at all.  I changed vacuum hose also.  What way should I try to adjust the modulator or is there another problem

1 Answer

86,775

Did you loose the pin that goes in the end of the modulator? Are you sure you are getting vacuum to the modulator. Some modulators can be adjusted by the set screw that is located where the vacuum line attaches, there should have been instructions on a base setting. I don't know if you have one of those or not. You can also purchase different length rods for the modulator from most tranny shops, the longer the rod the higher the shift point and the firmer the shift. So it's a trial and error when changing the little rods.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Ford Mustang Questions

Ford Mustang Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,050
#2 FordNut
FordNut
Reputation 1,230
#3 Bob Beaman
Bob Beaman
Reputation 1,100
View All

Related Models For Sale

Used Dodge Charger
356 Great Deals out of 29,613 listings starting at $2,475
Used Chevrolet Corvette
180 Great Deals out of 20,810 listings starting at $3,995

Used Cars For Sale

2017 Ford Mustang For Sale
3 Great Deals out of 22,144 listings starting at $18,999
2016 Ford Mustang For Sale
55 Great Deals out of 3,887 listings starting at $16,999
2015 Ford Mustang For Sale
46 Great Deals out of 3,271 listings starting at $14,995
2014 Ford Mustang For Sale
43 Great Deals out of 2,862 listings starting at $9,499
2013 Ford Mustang For Sale
21 Great Deals out of 1,179 listings starting at $9,000