The 1990 Vanagon camper keeps running after I take the key out of the
ignition  but only sometimes.  When it happened I tried to shut off the
engine by disconnecting the ignition wires by pulling out the connector
from the ignition.  No use.  The engine kept running.  The only way I could
stop it was by disconnecting the alternator.  Is there a relay somewhere? 
If it was the ignition switch it should turn off when I pulled the ignition
wires off, shouldn't it? This only happens from time to time.

Sorin Bejenaru
(415)665-7030