91 celica gt od/cruise control problems

[lone wolf]

Maybe I got this post in the right place this time. I have a 91 celica gt, the od down shifts at the slightest hint of a hill at any speed when in cruise control. I want to make the od strictly manual (that is from the switch on the stick only). The schematics in the worthless Haynes manual I have aren't much help. I have good mechanical and electronic skills, I just need to know where and what wire to cut. Any suggestions?

[manasseh61]

I don't think you could do that,the od down shift to compensate maintaining the speed whe cruiise control on,

[Pineapple]

It down shift because OD don't have enough torque to maintain speed. Keeping it in OD will damage the tranny. You can only lock OD off but not lock OD on.

[xpeed]

Well. I don't think you can do what you say you want to do. The tranny on toyotas are designed to help you slow down at a steep downhill, and the uphill shifting is to help you gain more acceleration power. But if you still want to turn that off, I have no idea how to get rid of OT because it's probably connected to the car's computer.

[Pineapple]

It could be done. Get a copy of Toyota Factory Repair manual. Swap to manual tranny would make more sense.

[darksecret]

Check Celica Tech, they have a few Big Green Books online.