| [GMCnet] 455 will not shut down [message #80726] |
Fri, 16 April 2010 09:05  |
tjgmcstl
Messages: 2
Registered: February 2009
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Question for the group. 1977 455 engine will not shut down with key. I had ingnition lock removed inspected and installed. Then replaced the rod actuated,column mounted ingition switch with no success. I have MSD ignition. The only way I am able to get the engine to shut down is to pull the battery lead at the distributor. The shop's fix is to install a toggle kill switch until they can figure out why it is backfeeding.
Thanks for your input!
TJ Rinn
77 GMC 455
Palm Beach
St. Louis
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| Re: [GMCnet] 455 will not shut down [message #80730 is a reply to message #80727] |
Fri, 16 April 2010 09:21  |
tjgmcstl
Messages: 2
Registered: February 2009
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Nothing has been worked on in a year or more engine or house electrical. Everything has been working well. I have MSD ignition, Progressice Dynamics Invertor and Yandinda 150 combiner. Engine still runs with all batteries disconected, so Alternator feed is likely.
TJ
-----Original Message-----
From: Steven Ferguson <botiemad11@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Fri, Apr 16, 2010 8:14 am
Subject: Re: [GMCnet] 455 will not shut down
I sounds like somehow you've tapped into the alternator at some point
nd as long as it's putting out juice, the engine will keep running.
What is the last thing worked on or touched before this started happening?
On Fri, Apr 16, 2010 at 7:05 AM, <tjgmcstl@aol.com> wrote:
Question for the group. 1977 455 engine will not shut down with key. I had
ngnition lock removed inspected and installed. Then replaced the rod
ctuated,column mounted ingition switch with no success. I have MSD ignition.
he only way I am able to get the engine to shut down is to pull the battery
ead at the distributor. The shop's fix is to install a toggle kill switch until
hey can figure out why it is backfeeding.
Thanks for your input!
TJ Rinn
77 GMC 455
Palm Beach
St. Louis
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--
teve Ferguson
76 EII
ierra Vista, AZ
rethane bushing source
ww.bdub.net/ferguson/
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MCnet mailing list
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| Re: [GMCnet] 455 will not shut down [message #80760 is a reply to message #80726] |
Fri, 16 April 2010 13:32 |
voodoolng
Messages: 40
Registered: February 2004
Location: Colo
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When I had an MSD I had to put a diode in the dash gen light wire. It would draw current from the alt battery and keep the engine running, that was sometime ago. MSD say this in there instructions somewhere, what size and where.
73 Glacier Voodoo lounge
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