<html><body>The other possible simple adjustment is the throttle switch set to 1/5th throttle-use the 12V test lamp and it sets perfect. (procedure in workshop book) If you fooled with carbs or linkage, this setting can be disrupted.<div><br></div><div>Another possible issue is dirt in the valve body...remove the tunnel, unscrew valve nut and "carefully" remove shaft, spring and ball and clean orffice. Be sure that the tiny hole in the bottom of the valve shaft is open. Don't use a rag, q-tip or shop towel-no lint! Use a small wire or welding tip cleaner. Hank<br><br><div class="reply-new-signature"></div><p>-----------------------------------------</p>From: "Bruce Steele" <healeybruce@roadrunner.com><br>To: "Bob Spidell"<br>Cc: <br>Sent: Monday March 22 2021 9:41:20PM<br>Subject: Re: [Healeys] overdrive problem<br><br>
I agree with Bob, but I'll share an experience I had in the off
chance it<br>
helps. I had a problem with my OD dropping out and/or cycling in
and out.<br>
After much trial and error and tracing with the volt meter, I
figured out<br>
that the problem was that the fiber washer that came with the
replacement<br>
gear level position switch was slightly too thick, resulting in
intermittent<br>
closure of the switch. Removed the washer and used Teflon tape
instead,<br>
problem solved.<br><br>
Bruce Steele<br>
Brea, CA<br>
1960 BN7<br><br>
-----Original Message-----<br>
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of
Bob<br>
Spidell<br>
Sent: Monday, March 22, 2021 7:50 PM<br>
To: healeys@autox.team.net<br>
Subject: Re: [Healeys] overdrive problem<br><br>
The shop manual has a comprehensive diagnostic flow chart; and
maybe a<br>
troubleshooting guide as well.<br><br>
To make SWAGs, we need a little more info:<br><br>
- does it stay in OD indefinitely, until he accelerates, or pop
out<br>
immediately?<br>
- does it initially engage in 2-3 seconds, or take longer?<br><br>
If the pump is weak, OD would be slow to engage and, once the
accumulator<br>
has engaged there might not be enough to hold OD. But, my guess
would be<br>
something electrical; possibly the relay.<br><br>
Bob<br><br>
On 3/22/2021 5:06 PM, healeymanjim via Healeys wrote:<br>
> friends BT7 had o/d quit. solenoid was bad so replaced it. now
it will<br>
go into o/d but pop out when accelerating. any<br>
> ideas what the cause is and the fix?<br>
> _______________________________________________<br>
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