jim beam says...
> you'd need a /lot/
of air in the system to cause that.
> and this is a frequently mis-diagnosed problem. yes,
> the coolant level can tell the computer not to lock up
> the torque converter, but it can also be caused by
> issues with the transmission selector switch - in my
> experience, that can be more common on hondas. if the
> problem recurs, re-post and i'll link you to a write-up
> of how to fix it.
In an attempt to diagnose the problem, I rigged up a circuit
tied in to the lines going to the two solenoids near the top
of the transmission that shift the tranny into lockup. (I
actually know something about electronics, as opposed to
automotive stuff.) And I was out driving around at night so
I could see whether the LEDs were blinking. But, the
expected signals weren't being sent to the solenoids.
Actually that was good news because it meant there probably
wasn't anything wrong with the transmission.
It was at that point that someone suggested it might be a
temperature problem - possibly a bad thermostat, or air that
hadn't been bled out. So I tried the air bleed, and the
tranny worked perfectly after that.
By the way, the proper signals going to the solenoids turned
out to be a bit strange. One gets a solid 12V, but the
other one gets a pulsing signal - modulated in some way.