[DML] Re: UPDATE TO THE UPDATE OF A COUPLE STRANGE QUESTIONS
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[DML] Re: UPDATE TO THE UPDATE OF A COUPLE STRANGE QUESTIONS



Hey Mike,
I'm sorry to jump in this late, but I thought the RPM-relay
is one of the first things you checked when playing with that 
circuit ?!?!
Those are known to fail but simple to repair.
mounting it upside down or not - I don't think this makes 
a big difference, I would guess more  that the force the 
parts see when the relay is turned on is the reason for it.
and of course vibrations, heat and so on. Whatever you 
think helps - do it, I learned a lot from your mails, 
why not in this case, too ? :-)

usually those parts have no defined mounting direction,
it's not like hanging a space shuttle on a strange tube 
filled with explosive stuff :-)

OK need to go to work...beatiful weather, my Roadster
has to work now :-))))

Elvis & 6548 & 69 MGB




> Group,
> 
> Okay, either I'm the unluckiest guy I know, or Josh's
> car just plain hates me.  For the second time, I have
> run across something I have never seen or read about
> before.  But, the frequency valve is now working!! :-)
> 
> After many hours of trouble shooting and pouring over
> the wiring diagram, I finally figured it out.  It was
> the RPM relay.  I ordered a new one, but decided to
> open up the old one, just to look inside.  What I
> found was a first.  The little coil inside had broken
> loose from the contacts on the circuit board and was
> moving just enough to 'not' make contact when the coil
> closed.  Hence, no Lambda and hence no FV.  I
> re-soldered the connections and it is now working 4.0.
> 
> Now, here's my new question.  The relay was actually
> designed to mount upside down in the relay
> compartment, causing the little coil to put all its
> weight on those two soldered connections. (the circuit
> board only fits one way into the plastic case)  When I
> reinstalled it, I mounted it so it was right side
> up---does anyone see a problem with doing it this way?
>  (Elvis, I'm counting on you to have the answer)
> 
> Mike    TPS & BB    1630



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