[Mgs] Overdrive does not work when it is hot.

[Richard Ewald]

A bad electrical connection can have increasing resistance when it
gets hot.  We see this on modern cars and AC clutches.  Works fine for
30 minutes or so then disengages due to too high a voltage drop.
I wrote a piece for the Healey list on voltage drops and testing them,
you can find it on www.healey6.com under technical.
One suggestion, do the tests with every thing hot.
Rick

On Mon, Aug 30, 2010 at 8:36 PM, Andrew B. Lundgren <lundgren at byu.net> wrote:
>  Normal engine 20w-50 to start with.  Then I read some comments on using
ND.
>  I tried that, didn't make a bit of difference.  So I went back to normal.
>  Again with no difference.
>
> By hot I should say after I have been driving on a 80-100 deg day for about
> 30 minutes.  You can feel the heat on the metal plate that the gear shifter
> comes though.  It won't burn you, but you could make a cup of noodles on
it.
>  :)
>
> --
> Andrew
>
> On 8/30/2010 8:35 PM, Max Heim wrote:
>>
>> Well, what are you running for oil?
>>
>> I have to admit I don't see why it should get hot in the first place.
>>
>>
>> --
>>
>> Max Heim
>> '66 MGB GHN3L76149
>> If you're near Mountain View, CA,
>> it's the primer red one with chrome wires
>>
>>
>>
>> on 8/30/10 6:57 PM, Andrew B. Lundgren at lundgren at byu.net wrote:
>>
>>>   When my OD gets hot it won't engage, it will actually disengage once
>>> it gets too hot.
>>>
>>> I had the entire OD and transmission gone though before I installed it
>>> at a local MG specialist that was probably 5 years ago.  Since then I
>>> have put less then a few thousand miles on the car.
>>>
>>> I don't want to buy a new solenoid if that can't be the problem...  I
>>> have changed the oil in it a few times hoping that might be it.
>>>
>>> Thanks!
>>>
>>> --
>>> Andrew
>>
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