Kansasminers
New Member
- Joined
- Dec 28, 2011
- Messages
- 7
1976 bronco 302 c4 automatic. Problem: transmission will not shift out of low. I have replaced the vacuum modulator and hoses at either end of the steel line. I am not sure I have the vacuum source at the engine in the correct place. Does the transmission require a constant vacuum source? If so, that is how I have it connected. I have it connected to the tree on the rear of the intake manifold. Any ideas or suggestions? Thanks in advance!