Linda,
The solenoid may be at fault, but the "click" test may not be
sufficient. In the LH type OD, which your car probably has, the click
isn't audible. It is easily heard in the earlier OD, as in 1969s,
however.
My suggestion is that, having determined the fault to be other than
electrical, is just to replace everything that's part of the pump,
especially all the little springs, washers and O-rings. Pump is
expensive, though. Actually, if you don't mind going through the
exercise twice, just replace all the balls, seats, springs, Orings and
washers but not the pump. One can do all this pretty easily, although
it's messy. THe hardest part is refilling the trans with oil.
Bob
On Fri, 18 Jul 97 20:43:39 UT "doug russell" <dr-doug@msn.com> writes:
>Linda,
>
>Two things come to mind (and BTW I'm having the same problem at the
>next stage
>- no overdrive at all - but the beginning symptoms were the same),
>solenoid
>and pump. The solenoid should be easy enough to test and it sounds
>like yours
>is functioning because you can get the OD to engage. However, it may
>be
>defective (e.g., sticking) or perhaps there is an electrical short
>somewhere.
>I would rule out the electrical first by inspecting the lines and
>connections.
> Next is the integrity of the solenoid itself - unfortunately I'm not
>sure how
>to bench test for this - however, you should be able to hear the
>solenoid
>click as you engage and disengage with the ignition switch on (but
>motor not
>running). If you can't then this may be the problem - indeed, I
>cannot hear
>mine click even though I have verified the electrics and may have to
>cough up
>the $$ for a new one (about $100 - anyone have a good used one???).
>
>Next is the pump. Unfortunately I know nothing about this other than
>what an
>old lbc mechanic explained to me about 8 years ago (I glaze over easy)
>when it
>was determined that the solenoid on the OD was fine but the pump was
>not doing
>its thing sufficiently to keep the OD in OD. This typically happened
>after it
>had been running for awhile either failing to engage or dropping right
>out of
>OD in the middle of a road trip. I seem to recall that cleaning the
>filter
>helped. So this may also be the source of your OD ailment.
>
>Anyway, this is minimally helpful and hopefully some of the old (or
>young)
>farts on the list will have "been there and done that" and can help
>set us
>both back on the path of OD heaven.
>
>BTW, both my 69 C and 69 B Roadster ODs work in 3rd and 4th (when they
>are
>working of course). The 71 B GT I had awhile back there had an OD
>that worked
>in all 4 gears - weird but apparently harmless. Anyway, I believe that
>the LH
>overdrive in the chrome bumper cars is suppose to work in both 3rd and
>4th -
>I'm not sure if this is different for RB cars.
>
>BTW BTW the acronym "OD" use above is for Over Drive and not Obsessive
>
>Disorder and "RB" is for Rubber Bumper not Really Bonkers (I know how
>you
>obsessive types can be!).
>
>Dr. Doug
>69 C Roaster (OD works like a dream)
>69 C GT (Automatic - you tell me OD or not??)
>69 B Roaster (OD on the fritz)
>
>-----Original Message-----
>From: owner-mgs@autox.team.net On Behalf Of Linda Watson
>Sent: Friday, July 18, 1997 2:11 PM
>To: mgs@autox.team.net
>Subject: '75B OD problem
>
><bold><color><param>0000,8080,8080</param>Hi all, If this was covered
>in
>the last OD discussion I missed it. Problem: OD cuts out and it
>always
>seems to happen after the car's been running a few miles. Sometimes
>switches back and forth, in quick succession, and sometimes doesn't
>engage at all. Oil level is good, and I don't know what else to look
>for. (By the way, is it supposed to work in third gear? Mine
>doesn't.)
>
>
>In my last(first message) I rather arrogantly stated that I used to be
>obsessed...well, it's coming back! What's the best owners manual to
>get?
>
>
>Went to Vancouver recently and my baby performed like a true
>champ..except for the OD, which was probably just as well as there was
>radar set up in more than a few places. On the whole trip I only had
>to
>gear down once, for the hill approaching the toll booth on the
>Coquihalla. Next trip has to be via the Fraser Canyon; much more
>fun.
>
>
>Thanks, Linda
>
>'75 B, beater</color></bold>
>
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