Rick -
It sounds to me like your overdrive throttle relay is somehow cutting out
the circuit. By the way, you can't eyeball the throttle relay because to
adjust it you have to twist the lever on the shaft, so if the shaft is off,
then the cutout position is off too, regardless of whether the lever looks
right or not.
I'd run through all the electrics and make sure the relays and switches are
all working correctly, and the connectors are all firm and in good shape.
Alan
On 6/4/07, Rick Swain and Wendy Grant <grain@auracom.com> wrote:
>
> Out on a run (250 miles over 2 days), following a change of engine
> and gearbox oil, I began to experience problems trying to engage
> overdrive in my BN4. Initially it sometimes refused to go into
> overdrive, but after switching out of overdrive and waiting a bit, it
> seemed to work okay. Perhaps the key was that I was engaging the
> second time with less throttle. This happened intermittently
> yesterday, but with greater frequency today. Eventually it refused to
> engage with any more than the slightest throttle opening. If my foot
> is off the gas it switches into overdrive, but as soon as I apply any
> throttle it's comes out. With the car stopped, ignition turned on,
> car in 3rd or 4th gear, I can hear the solenoid click when I flip the
> switch to overdrive. If I have the accelerator depressed no solenoid
> click. Can anybody help? Am I looking at a faulty relay? No wires
> were changed, throttle switch looks like it's in the right position.
>
> The oil in the gearbox is the same Castrol Grand Prix 20w50 I always
> use. Oil level is a bit high. Rather than being at the high line,
> it's covering the h in high - about 1/4" above the high line. I don't
> see this causing such a problem but thought I'd mention it. What else
> - oh yeah, last year overdrive quit working and I cured that by
> cleaning the points in the overdrive relay
>
> Any thoughts about where I should be looking?
>
> Thanks
>
> Rick
> '59 BN4
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