[Healeys] overdrive problem

[Bob Spidell]

The shop manual has a comprehensive diagnostic flow chart; and maybe a 
troubleshooting guide as well.

To make SWAGs, we need a little more info:

- does it stay in OD indefinitely, until he accelerates, or pop out 
immediately?
- does it initially engage in 2-3 seconds, or take longer?

If the pump is weak, OD would be slow to engage and, once the 
accumulator has engaged there might not be enough to hold OD. But, my 
guess would be something electrical; possibly the relay.

Bob

On 3/22/2021 5:06 PM, healeymanjim via Healeys wrote:
> friends BT7 had o/d quit.  solenoid was bad so replaced it.  now it will go into o/d but pop out when accelerating.   any
> ideas what the cause is and the fix?
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