[Mgs] Overdrive Noise/Shifting Problem

[Max Heim]

Um, all you have to do is switch off the overdrive to prevent it being
actuated in reverse. Hopefully all users are taking this precaution as a
matter of habit. To be precise, there is no "reverse" lockout, as such -- it
is an "all gears except 3rd & 4th" or "all gears except 4th" lockout
(depending on year).

If the OD switch is in the off position, and the OD is in fact engaged in
reverse, then the damage has already been done.


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires


on 1/29/08 11:36 AM, mark.jones at exxonmobil.com at mark.jones at exxonmobil.com
wrote:

> I have the exact same thing happen to my car.  The loud whine in reverse is
> due to the reverse overdrive lock out switch/circuit not working and
> allowing the overdrive to be "engaged" while in reverse.  You really should
> check the circuit and check the lockout switch, probably the lockout switch
> needs replacing.  Unfortunately it is on top of the tranny and very hard to
> get to with the tranny in the car, although not impossible.  If the
> overdrive continues to operate while in reverse you may do damage to the
> overdrive clutch.
> 
> Mark
> 73 MGB GT
> 
> From: "Oliver" <sumton at sbcglobal.net>
> Subject: Re: [Mgs] Overdrive Noise/Shifting Problem
> 
> for the second time in about 6 months or so, i've put it in reverse, let
> out the clutch and all i get is a loud whine, no movement.  drive away,
> park, turn off the car.  come back in a few minutes, restart the car, and
> reverse
> works. could this just be low oil level?  i need to check that.
> 
> is this something i should be worried about, as in will it strand me
> somewhere?  i can deal with occasional no reverse.  these cars are light
> <grin>!
> 
> thanks!