Faulty relay. When the relay is faulty the overdrive will work thru the
lockdown switch and when you accelerate far enough the switch will open and the
overdrive will come out.
Sent from my iPhone
> On Dec 16, 2017, at 10:49 AM, Bob Spidell <bspidell at comcast.net> wrote:
>
> 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.
>
> Bob
>
>
>> 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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