| [GMCnet] Ignition switch drama [message #365266] |
Tue, 06 July 2021 13:56  |
David Simpson
Messages: 4
Registered: June 2020
Karma:
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Junior Member |
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I have an occasional but potentially traumatizing problem when starting
the engine.
Normal behavior is; insert and turn the key to the start position,
starter rapidly goes "ur ur ur ur ur ur" (phonetic sound of starter),
engine fires, key released immediately and it returns to run position,
starter disengages, no more "ur ur ur... " Everything is fine and away I go.
But sometimes, I get this abnormal behavior; turn the key to start
position, starter goes "ur ur ur ur ur ur" engine does not start, key
released and it returns to the run position BUT the starter continues to
go "ur ur ur ur ur ur ur ur"! Mercifully the engine does not start
though it tries to cough. I flip key back and forth between Start, Run,
Off, and even Accessory while starter continues to go "ur ur ur ur ur
ur". I grab something to tap the ignition switch with, "ur ur ur ur"
continues. Finally and unexpectedly, after resorting to repeatedly
trying every position the key can be turned to, turning the key to the
Off position has the desired effect and the starter takes a break. I'm
at a gas station, or a rest area or a camp ground and I want to get
going, but do I try it again? Eventually I muster the courage and try
it again. Thankfully I get normal behavior and I am on the road again.
I cannot find any reference to this problem in the GMCMI Magazine
technical articles nor in the GMCMI forum archives. All I have learned
is that the ignition key rotates the tumbler that moves a rod (up or
down - not sure which way) parallel to the steering column which engages
the switch which in turn engages the starter.
Is it a mechanical failure soon to strand me? Is it a simple magic lock
lubricant I need to buy and inject? Is it an adjustment of the start
switch I need to make? Is it something a locksmith should be consulted
on? (When it happens I fear the engine will catch and fling the starter
motor off doing nasty damage, thus the potential trauma.) Any similar
experiences and/or suggestions from anyone?
Dave Simpson
1975 26' Transmode - Upfitted by Norris
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