Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Freezing the Slushbox. Torque Converter on-demand lockup switch.

orange4boy · 09-07-2009, 06:13 PM

Lock up? Affirmative!

Time to wire? Ten minutes, sir!

Just got it working this morning. This is a temporary set up with no "ghost" resisitor to fool the ECT. I just cut the TC lockup wire, found a 12V+ to power it and put a momentary micro switch in to complete the circuit.

First impressions:

There was a rumbling sound the first time I switched it on. I was in 3rd doing about 30 mph. At first I thought this was the TCC slipping but it turns out it was the engine rumbling from being at too low an rpm for the gear. When I tried it again I downshifted to 2nd and it was great. Solid and smooth. I miss that direct connection you get with a standard tranny, now I has it.

Now I need a tach to learn the shift points because I can't hear the engine.

This will work better with the full control for sure because the gear chosen by the ect is too high for the TC to be locked. I may be able to make it work better by adjusting the downshift cable. Will have to try that out later.

For now it will stay a momentary switch.

09-07-2009, 06:13 PM	#10 (permalink)
orange4boy Master EcoModder Join Date: Aug 2008 Location: The Wet Coast, Kanuckistan. Posts: 1,275 The Golden Egg - '93 Toyota Previa DX 90 day: 31.91 mpg (US) Chewie - '03 Toyota Prius 90 day: 57 mpg (US) The Spaceship - '00 Honda Insight Thanks: 100 Thanked 306 Times in 178 Posts	Lock up? Affirmative! Time to wire? Ten minutes, sir! Just got it working this morning. This is a temporary set up with no "ghost" resisitor to fool the ECT. I just cut the TC lockup wire, found a 12V+ to power it and put a momentary micro switch in to complete the circuit. First impressions: There was a rumbling sound the first time I switched it on. I was in 3rd doing about 30 mph. At first I thought this was the TCC slipping but it turns out it was the engine rumbling from being at too low an rpm for the gear. When I tried it again I downshifted to 2nd and it was great. Solid and smooth. I miss that direct connection you get with a standard tranny, now I has it. Now I need a tach to learn the shift points because I can't hear the engine. This will work better with the full control for sure because the gear chosen by the ect is too high for the TC to be locked. I may be able to make it work better by adjusting the downshift cable. Will have to try that out later. For now it will stay a momentary switch. __________________ Vortex generators are old tech. My new and improved vortex alternators are unstoppable. "It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.