warm start / no spark

[Burl Vibert]

Mark Woodland wrote:
>
> Greetings,
> Max ('87 5KTQ) has been down for the better part of two weeks, with a few
> hours per weekend devoted to trouble shooting, breaking down, getting a ride
> home, and miraculously starting several hours/a day later..
> What seemed to be a Hall sensor problem did not respond to identical
> distributor replacement.
> I've seen numerous references in the archives to an intermittant "Hall
> sensor like" condition exacerbated by cold weather.
> More precisely, it starts when cold, no problem, but after coming up to
> temperature and being shut down for a short time (1/2 hour) spark is lost
> until the car gets back down to ambient.. 30 degrees (F) or thereabouts.
> I plan on going through the rest of the tests this weekend, per the Bently,
> i.e.Timing and RPM sensors, wiring, etc, etc.
> Just wanting to take a poll as to what is the most frequent cause of the
> intermittant spark loss condition.
> Many thanks in advance,


My vote is for the crank position sensor.  It gives the same
conditions when it's on it's way out.  Try piling snow on it next time
it craps out.

Burl Vibert
1987 5kcstq
Kingston, Ontario