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There are numerous threads on the OD in the archive. Search & read if you haven't.
Ken C's message covers it well. It's a common problem.
The steps I follow: 1) Is the relay working? if Y, 2) is the OD solenoid clicking? If N, 3) check wiring and 12V to it; once that's OK, 4) pull the solenoid and flush out (12V it open) then flush the ports on the trans. I suck some out w/ a vacuum tester; then start the car and let some fluid blow out. This makes a mess.
There could be a problem in the trans itself but to-date I'm 100% on the above.
Sometimes when I replaced a bad solenoid I've had to take it back off and flush - the ports are clogged from disuse. So now I always flush the ports.
if the solenoid is bad, cut a grove in it and save the money on a bypass plate. Instructions and pics for that in the archives too.
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240 drivers / parts cars - JH, Ohio
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