Re: Ovedrive solenoid/Overdrive relay
"Bernie Franklin" <email@example.com> wrote in message
> Hi Everyone,
> I haven't posted on the newsgroup for awhile, I guess it's because up to
> my 90' 765T has running great.
> I am having problems with the tranny. It won't shift into 4th-overdrive
> until the car has been driven for about 10-15 Minutes.
> I have replaced the kickdown cable and made sure it is adjusted properly.
> I just replaced the overdrive solenoid and so far no change.
> I will try replacing the relay next.
> Has anyone replaced the relay? Can the relay appear to work, it clicks
> cold and upshift arrow lights up, and still be bad?????
> I took it out and took it apart and the solder appears to be fine with no
> Nothing happens when I deactivate the solenoid with the button when it's
> cold but when it gets warm and I know it will shift the transmission will
> change when the button is pushed.
> When the car was cold I tried to listen for the click from the solenoid
> deactivating it with the switch, I didn't hear the click when deactivating
> or activating the solenoid.
> That's what led me to believe it was the solenoid because it did not click
> when the car was cold.
> Am I looking at a new tranny??
> By the way the tranny was recently flushed and when I replaced the
> cable more clean fluid was added so the fluid is nice and clean.
> Any answers will be welcome.
> Bernie Franklin 1990 765T 200K still running.
My first guess would be a broken wire somewhere if the relay is ok, though
hairline cracks in the solder can be hard to see so I always add some fresh
solder once I've got one apart.
Get the car up on ramps or jackstands, turn the key to accessory and engage
the OD (arrow light off) then climb down under and check for 12v at the wire
to the solenoid. If it's present, have someone engage and disengage it and
listen to see if it clicks.