94 pickup RAIN electrical short

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01-10-2020, 04:07 PM

#21

Co_94_PU

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Iirc "clicking in the right hand side of the dash" presummed to be a relay, and a "five amp draw" showing on the meter..

For S&G's, have someone push open the flaper/vane in your air meter while you sit in the cabin...

Your circuit opening relay is down there, and a fuel pump draws about 5-7 amps after it spikes.

...
That 1.9 your seeing is the voltage drop across the diode fwiw..

Carry on.

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01-10-2020, 06:09 PM

#22

RAD4Runner

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Quote:

Originally Posted by jdfnnl

.... A resistance test between the 10mm post on the alternator and the frame stays at 1 except on the continuity setting, which stabilizes at 1.9.

1-ohm? That's low! Tested with alt-to-batt wire disconnected?

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01-10-2020, 06:59 PM

#23

jdfnnl

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not sure what the units are on the continuity

setting .. but all the other resistance settings had a reading of 1 -- not sure what anything > 1 means as it's my understanding anything ≥ 1 is an open circuit.

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01-11-2020, 04:01 PM

#24

Co_94_PU

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Quote:

Originally Posted by jdfnnl

not sure what the units are on the continuity

setting .. but all the other resistance settings had a reading of 1 -- not sure what anything > 1 means as it's my understanding anything ≥ 1 is an open circuit.

That is definitely a diode test mode.

I've got a alternator sitting here, not sure its fully assembled (yep no brushes or regulator attached YMMV), let me find my meter..