Arrrrrrrrgh! Intermittent dead 90q ignition (long)

[Huw Powell]

> I've been having intermittent ignition problems with my 89 90q with 214000
> miles for over a month now.

> In the past month, I have replaced the distributor/hall sensor and ignition
> control computer with units sourced from Chris Semple...
> I bought a NEW ignition coil/module from pap-parts, and the car
> drove fine from Dayton to Chicago and drove fine for most of this week as well.

Oops, that makes my suggestion to swap the hall sender, etc., pretty
irrelevant, doesn't it?

> Am I missing something?  Where else should I look?  Is it possible that the
> keyed ignition switch is failing, though it still performs all other functions
> it should?

perhaps.  But that should be measurable - can you carry a multimeter, or
experiment at home?  I know intermittent problems are a bear to track
down, but i think you should be able to measure 12 volts at the coil
when the ignition is "on".  Find it, make the problem happen, and then
see if it is still there.  if not, you've got your gremlin by the tail
and just have to figure out which hole it lives in...

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/