| [GMCnet] electrical problem [message #107675] |
Mon, 06 December 2010 11:52  |
Charles
Messages: 455
Registered: January 2004
Karma:
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Senior Member |
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Recently my 1975,GMC did not crank when I tried to start it with the engine
battery.
I used the dash jump switch and it cranked and started. I then turned the
dash jump
switch off and drove the coach home. Yesterday, almost a month later, I
pulled
the engine battery and took it to Autozone and had it checked. It was good
and
showed 13.2 volts. I have a Yolinda combiner on this coach and when I got
home from the trip where the coach didn’t start I plugged into house voltage
which
I think would have charged both the engine and the house batteries. While
removing the engine battery I bumped the positive cable to ground and got a
big spark. The cable was completely disconnected from the engine battery
when
this happened. I thought it should not have had any voltage in it. The dash
switch
was off so the solenoid should have been open but it appears voltage was
coming
through it to the engine positive cable from the coach battery.. I removed
the engine positive
cable from the solenoid and checked the solenoid with an ohm meter. It
showed 100%
continuity across the legs of the solenoid. I then disconnected the solenoid
activation wire
from the solenoid thinking there might be a problem with the dash switch and
this
would eliminate it from the system. Things changed but not completely. Now
when
I check the solenoid for continuity across what should be an open circuit I
get a blip
of continuity but not 100% . Could the Yolinda combiner causing these
reading and
line connection? Does it sound like a bad solenoid. I have a life time
warranty on
it so it would not take much to replace it. I have more than half the wires
off of it
already. Any help and suggestions would be appreciated.
Charles
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Charles Wersal
Duncanville, Texas
26 foot 1975 Glenbrook
Pandora's Box
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