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Old 09-29-2013, 05:06 PM   #1
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Default 94 gmc electrical problem

just installed a rebuilt engine and have a short from the + batt. cable to the engine block. any thoughts on how to run the thing down would be appreciated. thanks
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Old 09-29-2013, 07:22 PM   #2
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Disconnect all cables and double check for short to ground. Possibly your alternator wire is crossed?
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Old 09-30-2013, 10:36 AM   #3
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thanks for the suggestion, but the alternator isn't connected yet and i made sure the wires aren't grounded. ignition wire off the starter shows a short to the block. it appears the solution is to chase each circuit individually with tester until something shows up.
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Old 09-30-2013, 11:23 AM   #4
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Do a visual check (sure you already have), if if nothing found, next you are going to have to isolate. A volt meter will be required. You will need some long wires with alligator clips. Once you get started, good chance you will find the short wire quickly. I am wondering is a positive wire was pinched while the block was installed...
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Old 09-30-2013, 11:40 AM   #5
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Make sure you didn't pinch starter wires with the bell housing when you installed the new motor.
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