[Healeys] test

Michael Salter michael.salter at gmail.com
Sat Dec 16 14:11:03 MST 2017

Assuming we are talking about a 4 speed (non BN1 gearbox) when full throttle is applied the engine reaction is in a clockwise direction.
If the shift lever is close to the tunnel it can be pushed left when the torque reaction rotates the engine on its mounts and that can be sufficient to open the contacts in the inhibitor switch.
Easily checked ... just hold the lever to the right and see if the problem goes away.

From: Healeys <healeys-bounces at autox.team.net> on behalf of Bob Spidell <bspidell at comcast.net>
Sent: Saturday, December 16, 2017 1:49:06 PM
To: healeys at autox.team.net
Subject: Re: [Healeys] test

I can't think of any failure mode in an OD that would only occur when
accelerating.  The pump and accumulator need to maintain a minimum
pressure of 350psi or so, so you'd expect a weak pump or leaky
accumulator to cause disengagement, or slow engagement, when slow or
decelerating.   Throttle switch, relay and solenoid would most likely
fail randomly.  I'd replace one at at time--starting with the
switch--since it's the cheapest/easiest to replace--then go from there.
I've had both a bad switch and relay cause random disengagement.  If
it's not the switch, the relay can be carefully opened-up and the points
filed, to prove it's the problem or not before replacing.


On 12/16/2017 10:17 AM, healeymanjim wrote:
> this is a test.  overdrive intermittently drops out when accelerating.  no specific conditions, just when accelerating.  may
> go days without doing this, then will do it every time i accelerate.  question. is it (a) solenoid (b) relay (c) throtlle switch
> (d) adjustment (e) all of the above.  TIA

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