Subject: [TR] Overdrive Diagnosis

From: George Haynes <[email-masked]>
Date: Sun, 30 Jun 2013 23:32:06 -0400 (EDT)

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The overdrive quit in my TR4A.  Topped up the transmission oil; no joy.

Investigating shows the solenoid is electrically energized but it needs a l=
ittle push to actuate.  Then the plunger remains engaged until electrically=
 disengaged.  I suspect the pull-in coil is shot and only the holding coil =
is working.  I think I need a new solenoid.  I removed it for bench testing=
 which was inconclusive because the solenoid isn't doing any work.  I'd lik=
e a second opinion before I order a new one.
Thanks for your thoughts,
George Haynes

=20

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<font color=3D'black' size=3D'2' face=3D'arial'><font class=3D"Apple-style-=
span" size=3D"2">The overdrive quit in my TR4A. &nbsp;Topped up the transmi=
ssion oil; no joy.</font>
<div><font class=3D"Apple-style-span" size=3D"2"><br>
</font></div>

<div><font class=3D"Apple-style-span" size=3D"2">Investigating shows the so=
lenoid is electrically energized but it needs a little push to actuate. &nb=
sp;Then the plunger remains engaged until electrically disengaged. &nbsp;I =
suspect the pull-in coil is shot and only the holding coil is working. &nbs=
p;I think I need a new solenoid. &nbsp;I removed it for bench testing which=
 was inconclusive because the solenoid isn't doing any work. &nbsp;I'd like=
 a second opinion before I order a new one.</font>
<div><font class=3D"Apple-style-span" size=3D"2">Thanks for your thoughts,<=
/font></div>

<div><font class=3D"Apple-style-span" size=3D"2">George Haynes<br>
</font><br>
<br>

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From: "Randall" <[email-masked]>
Date: Sun, 30 Jun 2013 21:36:22 -0700

> Investigating shows the solenoid is electrically energized 
> but it needs a little push to actuate.  Then the plunger 
> remains engaged until electrically disengaged.  I suspect the 
> pull-in coil is shot and only the holding coil is working.

Probably just the contacts; but the cure is the same.  Time for a new one.

-- Randall