Can you run a 4L60E without a computer?
Externally, all it needs is a 12-volt source and an engine-vacuum reference. However, if your trans is, in fact, a 4L60E, running it off a computer is mandatory. Never mind TCC lockup; without a computer, the trans won’t shift at all.
What controls the 4L60E transmission?
The answer is the PCM is in complete control of every aspect of when and how the 4L60E shifts, Line Pressure and Lockup.
Does a 4L60E have vacuum?
Hello, the 4L60 does not have a vacuum hose, it uses a throttle cable that connects to the throttle body . The 4L60 also needs a torque convertor clutch electrical signal.
What’s the difference between 4L60 and 4L60E?
The rear output housing is configured with a six-bolt pattern in late model 4L60E transmissions. The 4L60 transmission is configured with a four-bolt pattern. The bolt pattern is not a guaranteed distinction, however, as early 4L60E transmissions, manufactured from 1992 through 1997, also have a four-bolt pattern.
What fails in a 4L60E?
The 3/4 piston rubber seals shrink from heat and age. Hydraulic pressure blows around it and the clutch pack fries. What you need are a new piston and a clutch pack. No Second Gear/Reverse – The second most common symptom of a failing 4L60E transmission is your inability to shift to second gear and go reverse.
How much HP can 4L60E handle?
Their Stage 2 Pro Race transmission can handle gobs of power while their Invincible Black Edition 4L60E trans can support over 1,000 ponies.
How does vacuum modulator work?
Vacuum Modulator is an engine load sensing device that converts engine vacuum into a transmission valve body input. As the throttle blades are open the manifold or engine vacuum drops as ported vacuum (above throttle blades) increases.
Where is the vacuum line on a transmission?
If the truck has a vacuum hose to the transmission (to the vacuum modulator), the line will be a metal tube attached to the large tube that the transmission dipstick is in. It will come up and connect to a hose that will run to the base of the carburetor.