[6pack] Since we're talkin' about TR-7 J-type ODs …

[Henri Lefebvre]

James,

In your response below you write:

"..You can check ....Third possibility is the secondary relay.  It
could also be stuck."

I am currently checking my J-Type O/D electrical before I re-install
the transmission cover.

What are you referring to by "secondary relay"?
Where is it located and what is its function?

My J-Type has 3 switches around the top cover:
  Left side is the reverse lights;
  Right side the Neutral switch which is part of the ignition system.
  Top, forward of the shift lever, is the O/D switch to ensure the O/D
turns ON only in 3rd or 4th.

Thank you,

Henri


On Tue, May 29, 2012 at 4:13 PM, Ruffner, James A *HS
<JAR7U at hscmail.mcc.virginia.edu> wrote:
> First place to check is the solenoid.  It could well be jamming.  They get
> old, and dirt gets into the space between the plunger and the barrel of the
> solenoid.  Most of them will make a distinct "snap" when going into and out of
> operation.
>
> You can check the operation of the switches in the transmission cover by
> putting a meter to check electrical continuity when you shift gears.   Third
> possibility is the secondary relay.  It could also be stuck.  The car does not
> even need to be running when doing these tests, just have the ignition on.
> Check the wiring diagram to see where to put the meter.  You can also use a
> little light bulb and a couple of alligator clips and watch to see if the
> light goes on and off.
> ________________________________________
> From: 6pack-bounces at autox.team.net [6pack-bounces at autox.team.net] On Behalf Of
> Douglas Morris [dcmdcm at nc.rr.com]
> Sent: Tuesday, May 29, 2012 5:12 PM
> To: 6pack
> Subject: [6pack] Since we're talkin' about TR-7 J-type ODs
>
> Me ol' '74-6 took me from NC to Seattle, LA, TX, and back without a whimper
> last Summer.
>
> However, over the past few months, I've been experiencing some strange
> overdrive-related symptoms.
> 1. Long after it's warmed up (dunno if significant), it won't shift out of OD
> in either 3rd or 4th. Not always.
> 2. While OD is selected and accelerating in 2nd, it shudders. If I go back to
> first and unselect OD, things go fine.
>
> Could it beeee
> a) Fluid level? Too lazy to check that, yet. (maqana)
> b) OD solenoid?
> c) Gear-position switch(es)?
> d) OD switch? It was replaced 2-yrs ago.
> e) *gulp* Something really bad?
>
> Just lookin' for a starting place.
>
> Doug Morris, NC
> '74 TR-6 CF-183XX-UO
>
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>



-- 
Henri
75 TR6, triple webers