MGB Overdrive Transmission Fixed! Not electrical!

In this video, I determine that my 1977 MGB's Overdrive in the transmission wasn't working because of the oil pump (jammed). I also show how to test the solenoid. This car has the blue label later overdrive.

[@davidandlaurablevins68]

Thank you so much for posting the video. The guys that work on these OD units try to get your 401K when they work on them for you.😅

[@lawrencesargant1669]

Great job thanks👍🇬🇧

[@falconbobb]

my 75 mgb overdrive was inoperable for 20 yrs, not willing to spend $600 to have someone look at. i pulled the inspection cover off and found metal shavings wedged the oil pump piston in the off position. i removed, sprayed 4 cans of brake cleaner, lots of compressed air and 4 dollars of o-rings and viola...started to work. been good ever since.

[@samiamgreeneggsandham7587]

Very interesting. I couldn’t get the OD to work on a 79 B years ago. Took it to a shop that only worked on British sports cars. They wouldn’t touch anything mechanical about the OD, and as a matter of habit would give up on any OD problem that wasn’t electrical.

[@jeffhildreth9244]

Just now diagnosing and attempting to fix a 70 B inop overdrive. The car was sitting since 2009.. "worked when parked" : ). Thanks and thumbs up on the RBB delete.

[@mcnamarasgarage]

I also did the '70 front grill! love the fishmouth. Did you get your OD working?

[@erwinboer5174]

Glad you made a film of the overdrive issue. I'v got problems with the OD on our 79,MGB and it is this is helping me a lot thans for it!

[@mcnamarasgarage]

Hey, great, hopefully you can get it figured out. First check if you do have power to the solenoid

[@thewrightsgarage]

Thanks for the video Bill

[@mcnamarasgarage]

Thanks for watching!!

[@MGB-learning]

If not an electrical issue try replacing all the o-rings and using a straight 30 wt motor oil. You get a quieter transmission.

[@MGBDCM]

I thought I had a oiled-up clutch. It was slipping bad! NOPE! totally dry, no leak from rear main or front transmission seal..... Must be in the OD. Both in and out of OD. Anyone?

[@RobertoHernandez-jh7ql]

I need to know it the MGB 1979 overdrive transmission use diferent clutch Plate ?

[@mcnamarasgarage]

nope, same clutch components for overdrive or regular 4-speed

[@danielchase3236]

How did you remove the pump body after it was installed incorrectly? I am having trouble removing the pump after I installed it wrong.

[@mcnamarasgarage]

I got up in with a hook and you can pull it downward. You should be able to look inside the body and see the top of it where it is hitting the cam.

[@tonycraven6114]

I had the same problem- a half inch drill bit fits snugly into the bottom end of the pump assembly which allows you to wiggle it about and free it.