Disable downshift on my Previa.? Help me P&G!

[orange4boy]

Four speed auto transmission downshifts way too easily. Does anyone know how to retard it or disable it temporarily so I can pulse and glide properly? It has overdrive too so it should be a pretty good improvement if I can get it to work.

Thanks.

[taco]

loosen the shift cable connected to the throttle body. i did it on mt lexus es300, that way it takes more pedel to make it down shift.

[MetroMPG]

RH77 did something similar with the linkage on his Acura. Seemed to work for him.

[orange4boy]

That is so darn simple.

Thanks guys.

Super handy on my previa is access to the throttle body under the driver's seat. I just installed a vac gauge so that cable loosening is the next 5 minute mod.

Sweeeet!

[orange4boy]

I loosened the cable 1/4 " but it still downshifts too easily. I only tried it at between 50 and 60 kmh though.

I'll loosen it all the way then see.

I'm betting it's a vacuum thing. Bleeder valve?