My 77 did the same thing and it was an intermittent switch. Took the
switch apart (watch the way (direction) the parts fit carefully),
cleaned it, and it has worked well since. Have to watch it because it
will not switch at times because it has worn a groove on one of the
internal parts, but it no longer randomly switches in/out of O/D.
Walt Goddard
waltcpa@sierra.net
----- Original Message -----
From: Rich Peterson <kerry3@earthlink.net>
To: MGS <mgs@autox.team.net>
Sent: Sunday, June 04, 2000 7:30 PM
Subject: Overdrive Problems - '77B
> Well, the weather has been great here in Michigan and I've been
enjoying
> taking the long route to work, but have stumbled across an old
problem
> that will not go away . . . The overdrive cuts in and out randomly
once
> the car has been driving for a while. I checked and cleaned all the
> electrical connections last fall before I garaged the car for winter
and
> thought I had solved the problem, but alas, I have not. I'm
starting to
> suspect that the solonoid coil is on it's way out, but thought I'd
> solicit the group's opinion prior to troubleshooting with my
checkbook.
> Anything else I should look at? Any way to check the solonoid? I
might
> try hooking up a meter to the solonoid wire so I can watch the
voltage
> for fluctuations as the OD cuts in and out, but other suggestions
are
> welcomed.
>
> Regards,
>
> Rich P.
>
>
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