Is There A Fix For Auto Trans Wont Shift Into 4th Until Warm?

[bronsin]

Originally Posted by 41magmag41

It's an emission thing for the computer. Why fight it, all yaris automatics do it. I find that it takes me about 2 miles and reaching a temp of 137 degrees and it slips right into 4th. I'm still getting 38.5 to 41.5 mpg on her and drive the interstate to work for 28 miles at speeds around 75. Not bad.

I would live with it and not push the car as it's designed that way.

But you are burning MORE gas when doing that. I dont drive on the highway were I can get 40 mpg. I just drive 6.5 miles to work and back everyday. A mile or two of that is being stuck in 3rd gear.This winter with winter crap gas and temps in the teens and 20s in the morning, I got lows of 28 mpg. And I never exceeded 45 mph. With a manual you can be in 5th gear ANYTIME you want. So dont try to tell me it HAS TO be that way because it doesnt.