Re: Problem-86 Toyota Truck Automatic Transmission Overdrive

On Tuesday, August 1, 2000 at 2:00:00 AM UTC-5, olepat wrote:
> I had overdrive trouble on my '88 2wd 22re a while back and will
> try here to remember how the system worked. Maybe the 12 volts to
> the solenoid is there only so that 4th (overdrive) can be
> disabled until warmup. In other words, after a temp sensor says
> so, the
> solenoid opens a port to 4th gear which stays open & allows 4th
> to shift whenever demanded. Make sense? Now, what I did was to
> run a test light from the solenoid wire into the cab to observe
> the circuit. All was fine. When the truck engine reached temp,
> the
> solenoid wire was energized. My problem was the solenoid
> itself.*** Broken wires at the top of the solenoid barely
> contacting***. I
> sort of eliminated the valve body as the problem 'cause the
> overdrive worked some of the time. The gist of this, is that I
> am suggesting
> that the solenoid doesn't open and close constantly to shift
> 4th. It remains open when the truck is up to temperature so that
> 4th can
> shift in and out whenever it is called for. Check for broken
> wires at the solenoid. I noticed that the new solenoid was
> reinforced in that
> area. Mine was s snap to change. Totally external. Cost about
> $140. If I'm wrong about all this, never mind.
> 
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Where is the solenoid located?