| [GMCnet] Start problem [message #64508] |
Mon, 16 November 2009 14:33  |
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Dennis[1]
Messages: 4
Registered: April 2009
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Junior Member |
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I have a start problem and need some help understanding what is happening.
The vehicle is a 1973 23 foot GMC motorhome, that has been retrofitted with HEI.
The transmission was out to replace the flex-plate, which had cracked. The flex plate is now fixed.
The transmission mechanic said that they had trouble getting it to start, and had to tap on the starter solenoid to get it to start, and that I may need to replace the starter soon. This is a new problem that I have not experienced before.
It started OK at the transmission shop after the flex plate work was done.... and drove home fine.
But then, as predicted by the transmission mechanic, the starter would not start the motorhome. Tapping on the starter did not help.
After replacing the starter with a re-built unit the vehicle starts when the key is in "start" position, but as soon as the key is returned to "run" the engine quits.
When replacing the starter, the Yellow wire was returned to the R (resistor wire) terminal, which I understand is not used on HEI, but it was connected to the old starter.
The purple wire was returned to the "S" (start) terminal. Connections are good.
Is there an easy way to diagnose and solve this problem?
Thanks in advance.
Dennis Schosboek
Port Angeles, WA
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