There is a chart in the Toyota transmission course that shows the pattern of solenoids to gear selection. I just needed the #s
I guess we can put the overheating issue to rest:
Quote:
Lockup?
All modern automatics (except for the continuously variable transmissions--CVTs--found on a few late-model cars) have locking torque converters to eliminate slip at cruising speeds, thus saving fuel. These are controlled by the powertrain control module (the engine and transmission management computer) on the basis of speed, temperature, throttle position, etc. If the engine is running at a higher rpm on the highway than usual--300 to 500 more--to maintain the same speed, it's possible that lockup isn't occurring. Besides reducing fuel economy, this can have the much more disastrous effect of causing the transmission to overheat.
|
From a very trusted source in the UK:
Quote:
|
The lock up is based on a clutch that ensures that the rotation of the engine flywheel matches that rotation of the torque converter without slippage. It is completely independent of the oil flow which ALWAYS flows to the oil cooler. I happen to have the original Toyota workshop manual for the A46DE transmission and in fact I also own a 93 rear wheel drive Previa GL (or at least I will until Friday)
|
So there you have it. Not an issue on the Previa. I like to know these things for sure.