Please pardon our dust while we improve the website over the next few days.  If you need anything please feel free to call 616-301-2888 or email Mike.  Thank you!

Q & A: 1974 MGB Roadster - Overdrive doesn't turn off

Hi John!
I don't know if you can shed any light on the problem I have but if
I
don't ask I'll never know.
I've got a 1974 MGB Roadster with Overdrive. About a year ago after
speeding down the motorway I found my overdrive would not disengage, this
gave the obvious problem of not being able to engage reverse. After the car
was switched off for about 20 minutes or so and cooled down the overdrive
disengaged and the car was fine (For about 5 minutes)
Since that time its always been the same, the car is fine for between
5-10 minutes the overdrive clicks in and out nicely but once everythings
warmed up it doesnt turn off, and I have to swich off the engine and let it
cool down.
The car is my only car and is used daily so I need to get it fixed as
the
performance is affected when this happens and parkings a bloody nightmare.
For no apparent reason everything seemed to work fine for a few weeks
during the summer and I hoped the car had chosen to do its own repair but
after a couple of weeks the problem returned and its still there today.
My local garage say they can replace the unit but this requires taking
the engine out and the total cost will be about £500 (about 750 dollars)
If you have any information on trying to repair this or what the fault
might be I would be eternally grateful,
Thanks
Troy (From the U.K.)

Troy!

I've attached an article I wrote about OD's -- perhaps that will be
of some assistance.

Nearly 99% of all OD problems can be cured by removing the
solenoid/filter/oil pressure relief valve... read more