figure out what wire coming out of the pcm is for the tcc lock up solenoid if you want to put a toggle switch on it but i would have it corrected in the tune

 

I did this exact mod to my 200R4 on my MonteSS, I just put a toggle switch in line with the brake signal to the PCM which will turn off lock up, and the wire was easy to access. If you can get your hands on a schematic you can probably use a similar wire, or wire in a toggle to one of the lockup solenoid wires going into the trans, as mentioned above.

 

Hmmmm all good advice. Having the tune adjusted is for later maybe. For now a toggle is what i may do. Just wish someone had already done this and could take the research out of it. haha

 

did anybody find out if this can be done?

 

just thinking of it the other day..all the roads at home are 35 mph around town and i dont lock until 45...i can go 4 miles at 35 and be unlocked..if i could lock im sure i could save a few mpg and some trans temp every day

 

If the pcm commands lockup, but it doesn't happen(due to your toggle switch), get ready for a check engine light and probably some sort of 'default' with the transmission commands.

 

Thats a good thought. I was worried about that a bit. Decided to leave it be and just use the towhaul when i need to delay it a bit.

 

The signal wire is pin #42 on the pcm to the tcc solenoid, white/grey wire if i remember right. Grounding that will lock the converter manually

 

is there any way to put it on a switch so you can keep it from locking up? and lock it when i want?

 

Thanks JohnHF. Ill check that out when/if I ever get to stop studying.