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Oil Temp & Pressure Gauge Question

I have a 1976 911 and the oil temperature gauge stopped working but the pressure reading works. Is there a way I can check the plugs or some way to check the gauge in order to locate the source of the problem?

Old 12-30-2016, 06:40 PM
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When you wrote, not working, is the temp gauge pegged up or just not moving from the bottom level?
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Old 12-30-2016, 07:02 PM
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well it does move whenever electricity is put to it, but after that it doesn't read anything.
Old 12-30-2016, 09:42 PM
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So it moves a little off the bottom?

Do you have a IR reader to check the thermostat on the passenger side rear wheel well.

How long of a drive and what is the outside temps?
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'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
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Old 12-30-2016, 09:50 PM
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No IR reader. My driving has been anywhere from 55 degrees to 80 degrees maybe 45 minute joy ride trips.

I thought maybe there was a way to put an amp meter to the wires or just send the gauge somewhere.
Old 12-30-2016, 10:14 PM
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Well, you could pull the gauge and place a volt meter to the wires and after 45 minutes, see if the voltage changes, this way you can verify if the sensor is bad or the gauge or if you a have Pelican near by that will help you out, you can swap their gauge into you car and verify that way too.
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'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
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Old 12-30-2016, 10:24 PM
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Does anyone know where to find the proper wiring configuration? I want to double check that these are correct.

I really have no idea what I'm doing with the multimeter. I'm pretty sure I'm checking for ohms, but I don't really know how to start i.e. where to put the ground lead.

Old 01-03-2017, 02:23 PM
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