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Re: Ur-q with mind of it's own.
On the other side of things when you go to shut the engine off.
Turn the key off, remove it from ignition yet the engine keeps running.
>
Sounds like someone hard wired the fuel pump relay or incorrectly
installed a second FP relay. As you know, the fuel pump should
definately stop when the key is removed from the ign. I have heard
of swapping an early 4k FP relay which doesn't have the pin installed
for ECU control of the FP, that way the engine never cuts out. Also
the very early Detection Techniques(aka Superchips) ECU mods
were implemented(hacked) such that the FP ran all the time the ign
key was on. A definate safety no no.
If the engine keeps running w/o the key, that would mean that the ECU
is still getting power and is not being switched off. I have installed an
switched relay to give my ECU *good* switched 12V power, maybe
someone was trying to do the same and screwed it up. Time
to get out the DVM and dig into that great ur-q wiring, and be sure
to take notes. Good luck.
As I recall, the "lights" and the "ignition" were separate switches
from the key/switch assembly, so it's quite possible that the lights
were correctly switched off, but the main ignition line left active
by a faulty switch.
I saw the "same" behavior from my fusebox wrt the rear window defrost,
as the rad fan overheated and softened (not quite melted) the fusebox,
allowing the rear window lead to connect to some unswitched +12 in the
fuse box . . . unfortunately, stopping the engine the hard way wouldn't
help this one -- took a coupla "dead battery and NO I DIDN'T LEAVE THE
**** LIGHTS ON" cycles to track this one down.
-RDH