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Overdrive wierdness - I'm not really sure

To: "Healey list" <healeys@Autox.Team.Net>
Subject: Overdrive wierdness - I'm not really sure
From: "Rick Neves" <Rick@genomictechnologies.com>
Date: Sat, 6 Nov 2004 06:44:46 -0500
I just got the tranny and overdrive back into my '56 BN-2 and it is running 
smoooth!

But I still have this weird thing going on with the overdrive. Basically the 
way it is operating is that when you have the dash switch in the off 
position, it runs without jumping into overdrive. Well that is normal, but 
once you flip the switch it will go into overdrive at the appropriate times 
only in third and fourth and it comes out of overdrive in any other gear. 
And that is normal as well.

The problem is that if you put the switch in the normal position after it 
has been in the overdrive position, the system will not revert back to the 
"never go into overdrive situation". What I mean is that it will continue to 
shift into overdrive at the appropriate times in third and fourth even 
though the switch is in the normal position. The only way to get it to 
revert back to the "never go into overdrive (or normal)" operation is to 
turn off the key. I've even tried this while driving down the street. 
Turning off the power and then turning it on and starting the engine and the 
overdrive then stays out.

Now this may all be the way its supposed to be! I'm not sure. I can see 
where it would be kind of a safety thing where hitting the switch 
accidentally might cause a high revving situation if this didn't do what its 
doing.

I've checked my wiring against the diagram several times. This is a BN-2 so 
it has the later design and all is correct. I'm scrutinizing the schematic 
and I guess myself I would have designed it a little differently having the 
dash switch the gas pedal position and the gear switch all in series to have 
the effect I'm expecting and its kinda like that but not exactly and that 
could be why its doing this weird thing.

But then may be its supposed to be like that.

Anyway I had a great ride the other morning just going around my block about 
a hundred times checking it out. Finally the power train is running smooth 
and I was relaxed enough to enjoy all the sensations of driving my fully 
rebuilt Healey.

Check out my progress www.RickNeves.com


Sincerely

Rick Neves
'56 BN-2


_._


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