<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body>
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;" dir="auto">
That does defy logic Bob.</div>
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;" dir="auto">
Can you give a little history, has it always been this way or did you change something? Did the problem develop slowly or over time?</div>
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;" dir="auto">
Anything else that may be relevant?</div>
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;" dir="auto">
<br>
</div>
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;" dir="auto">
M</div>
<div id="ms-outlook-mobile-body-separator-line" data-applydefaultfontstyles="true" dir="auto" style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;">
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;">
<br>
</div>
</div>
<div id="ms-outlook-mobile-signature" dir="auto" style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;">
<div style="font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt;">
<br>
</div>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Healeys <healeys-bounces@autox.team.net> on behalf of Bob Spidell via Healeys <healeys@autox.team.net><br>
<b>Sent:</b> Friday, October 24, 2025 8:41:36 PM<br>
<b>To:</b> Healeys <healeys@autox.team.net><br>
<b>Subject:</b> [Healeys] Overdrive Conundrum</font>
<div> </div>
</div>
<div class="BodyFragment"><font size="2"><span style="font-size:11pt;">
<div class="PlainText">Listers,<br>
<br>
I have a problem with my BJ8's overdrive that defies conventional logic: <br>
The O/D will not engage when the drivetrain is cold, but begins to <br>
function more-or-less normally as the drivetrain gets fully heated-up <br>
(15-20m on a warm day). I've checked the functioning of the electricals; <br>
i.e. when not running I can a) disconnect the coil ground so as not to <br>
fry the Pertonix Ignitor, b) place the gearbox in 3rd or 4th and c) <br>
close either, or both, the dash switch and/or the switch on the shift <br>
knob --they're wired in parallel so either one will engage the O/D, but <br>
both need to be in off/open condition to disengage--and I can hear the <br>
solenoid click firmly (this pretty much rules out the switches). I have <br>
already replaced the scuttle relay to no effect (I have had them get <br>
flaky). AFAIK, the throttle/'kickdown' switch only comes into play when <br>
disengaging, and seems to work when the O/D does engage.<br>
<br>
My thinking is, if the pump is failed or failing the O/D might work when <br>
the fluid is cold but cease to function as the fluid heats up and thins <br>
out (I've used Redline MT-90 successfully for over 100K miles or more; <br>
it's equivalent to 50wt engine oil). But, the O/D not engaging when cold <br>
(somewhat) refutes this theory. If the outlet check valve on the pump <br>
was somehow boogered I would expect either a) cold function only, or b) <br>
no function at all. Ditto the solenoid; I'd expect it to get flakey when <br>
hot and it does 'click' reliably (when cold). I can imagine the lever on <br>
the operating cam slipping, but wouldn't expect that to vary with <br>
temperature (or to work at all, actually). Actuating shaft lift was <br>
correctly set at rebuild. I do have a DWM 'uprated' accumulator <br>
installed, and the O/D engages within 2 seconds when it functions.<br>
<br>
Anyone had this condition, or have a theory as to why it behaves this <br>
way? Next step would be to remove the console and confirm I have good <br>
oil pressure (but if I do, then what?).<br>
<br>
TIA,<br>
Bob<br>
_______________________________________________<br>
Support Team.Net <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>
Suggested annual donation $12.75<br>
<br>
Archive: <a href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a>
<a href="http://autox.team.net/archive/healeys">http://autox.team.net/archive/healeys</a><br>
<br>
Healeys@autox.team.net<br>
<a href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a><br>
<br>
Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com">
http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</a><br>
<br>
</div>
</span></font></div>
</body>
</html>