[TR] Another over drive concern

[TERRY SMITH]

I did a voltage check of the power to the OD switch. It was full on. Solenoid kicked in. But intermittently, in 3rd and 4th gear, the solenoid "chattered" between engage and no engage. I have a short somewhere. Will try the relay when it comes in. After that, will rewire and re-solder all connections, replacing the modern two prong fuse unit with a standard glass fuse unit, in case the broken wire is in there somewhere. Stay tuned!
Terry Smith, '59 TR3A
New Hampshire.


> On July 25, 2017 at 3:29 PM Bud Rolofson <levilevi at comcast.net> wrote:
> 
>     One of my OD problems, (one was a bad relay) was the OD switch on the column had a broken wire connection that was not obvious because it sat in place until a bump in the road would “disconnect it”  and the OD dropped out until another bump made it “reconnect” and then I could again use the OD. I had two intermittent problems that drove me nuts until I could figure one out then diagnose the other. Check the switch wires to see if there’s a problem there.
> 
>     Bud Rolofson
> 
>     Extreme Parts Racing (more than just a haircut)
> 
>     71TR6 CC57365 (Good 6)
>     71 Spitfire MK IV Race Car #3
>     69 Spitfire MK III (back up FE engine/dinghy car)
>     93 Minnie Winnie Race Support Vehicle 
>     77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
> 
>     On Jul 25, 2017, at 9:54 AM, ron landis <rdltr250 at sbcglobal.net mailto:rdltr250 at sbcglobal.net > wrote:
> 
> 
>         > >         Just finished a 1200 mile trip with the TR250.  Only hiccup was the overdrive:
> > 
> >         When first starting out , each day, OD worked great.  After a short time OD would not engage.  I would flip lever on column, the amp meter on the dash would show a draw but it would engage OD.  Tried 3 to five times minutes later and it would engage.  Sometimes it would take 5 to ten seconds to engage.
> > 
> >         Its an A type OD.  Could it be a bad solenoid?  Or looking at the other link a bad relay?  I really don't want to take the tunnel off.
> > 
> >         Any suggestions?
> > 
> >         Thanks
> > 
> >         Ron
> > 
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