[Healeys] BN1 I want to drive it

John Harper ah at jharper.demon.co.uk
Fri Aug 27 01:14:56 MDT 2010


Mark

Is it possible that you have a fault in the overdrive solenoid that 
means that it continues to take high current after it has operated. This 
is something like 20 amps but should have dropped to around 2 or 3 amps. 
With such a high current together with some 'not perfect' connections in 
the ignition circuit and maybe a slight weakness in the ignition, the 
excessive current causes the voltage to the coil to drop to a point 
where the ignition spark is too weak to produce a reliable spark.

Your symptoms are similar to ignition problems where the spark can 
ignite a weak mixture but not a strong one that occurs when you 
accelerate.

Regards


>My Bn1 runs great in all the gears will pulls away just fine. Now take on
>the highway toss it into overdrive put your foot into and it stumbles or
>stutter until you take your foot out of it.  Ideas????
>

-- 
John Harper


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