The 700R4 is a four-speed automatic transmission that was first introduced in 1982 by General Motors. It was used in a variety of vehicles, including trucks, SUVs, and sports cars. One of the key components of this transmission is the TV cable, which is responsible for controlling the transmission’s pressure.
The TV cable is a critical component in the proper functioning of the 700R4 transmission. Without it, the transmission may not shift properly or may not shift at all. In this article, we’ll explore will a 700R4 shift without the TV cable and the consequences of operating the transmission without it.
Contents
The Function of the TV Cable
The TV cable, also known as the throttle valve cable, is a cable that connects the transmission to the throttle linkage on the carburetor or throttle body. As the throttle is depressed, the TV cable pulls on the transmission’s valve body, increasing line pressure and allowing the transmission to shift at the appropriate time.
The TV cable also controls the shift points of the transmission. The cable’s adjustment determines the shift point based on the throttle position, ensuring that the transmission shifts at the appropriate RPMs. This results in a smoother driving experience and better fuel economy.
Will a 700R4 Shift Without the TV Cable?
In short, no, a 700R4 cannot shift properly without the TV cable. The TV cable is a critical component in the proper functioning of the transmission, and without it, the transmission may not shift at all or may shift improperly.
If the TV cable is disconnected or improperly adjusted, the transmission may shift at the wrong RPMs, resulting in poor performance and decreased fuel economy. In addition, the lack of pressure control can cause damage to the transmission’s internal components, leading to costly repairs.
Consequences of Operating a 700R4 Without the TV Cable
If you try to operate a 700R4 without the TV cable, you’ll likely experience a variety of issues. First, the transmission may not shift at all, leaving you stuck in one gear. This can make driving extremely difficult and dangerous, especially if you’re traveling at high speeds.
If the transmission does shift, it may shift at the wrong RPMs, causing poor performance and decreased fuel economy. In addition, the lack of pressure control can cause the transmission to overheat and damage its internal components. This can lead to costly repairs and even transmission failure.
How to Adjust the TV Cable
If you’re experiencing issues with your 700R4 transmission, it’s important to check the TV cable and adjust it if necessary. Here’s how to adjust the TV cable on a 700R4 transmission:
- Locate the TV cable. It’s usually located near the throttle linkage on the carburetor or throttle body.
- Disconnect the cable from the transmission.
- Depress the throttle all the way to the floor and hold it there.
- Pull the cable tight and reattach it to the transmission.
- Release the throttle and check the cable tension. It should be snug but not too tight.
- Test drive the vehicle and adjust the cable tension as necessary until the transmission shifts smoothly at the appropriate RPMs.
Conclusion
The TV cable is an essential component in the proper functioning of the 700R4 transmission. It controls the transmission’s pressure and shift points, resulting in a smoother driving experience and better fuel economy. Without the TV cable, the transmission may not shift properly, leading to poor performance and potential damage to the transmission’s internal components. It’s important to adjust the TV cable if necessary and to seek professional help if you’re unsure about how to do so.