In another post, I mentioned that when I am trying to cruise I get a massive stuttering from my drivetrain. My only conclusion is my vehicle's torque converter clutch no longer can actually lockup. I'd like to disable it.
From what I understand, the torque converter clutch is actuated by hydraulic fluid. This hydraulic fluid is controlled by a solenoid valve. An electric current in the coil should cause the solenoid to open, causing a flow of hydraulic fluid.
Is there any reason why I can't just wire a switch somewhere in the transmission harness that allows me to interrupt the current to the solenoid? This should result in the vehicle using 4th gear without the lockup converter. The vehicle has a transmission fluid cooler, so I don't think the additional heat is going to be an issue.
I am guessing the electronics that control this probably check for some current flow, so the switch may actually need to switch between the actual coil in the transmission and a resistor. Is the solenoid connected to +12 V and then the other end is grounded by the computer? Or is the wiring the opposite?