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914World.com _ 914World Garage _ New VDO Oil temp gauge not working - help

Posted by: steuspeed Aug 10 2013, 08:29 PM

I bought a new VDO oil temp gauge and sending unit. I'm getting 13V power at the gauge. Light works on all three console gauges. Voltage and oil pressure gauges work fine. The sending wire Green/Black gets 7.3V on acc key turn and 8.3V car running. Any clues?

Edit: The old gauge never worked since I owned the car.

Posted by: timothy_nd28 Aug 10 2013, 08:49 PM

Disconnect the wire attaching to the temp sensor. Then measure the resistance from battery cable ground to the sensor terminal.

Go ahead and reconnect that wire back onto the sensor. Now turn your attention to that sensor wire behind the gauge cluster. Disconnect it from the gauge and measure the resistance on that wire to ground. What is the resistance of these two measurements? Do they match?

Posted by: steuspeed Aug 13 2013, 04:14 PM

Should there be continuity from the sending wire at the temp sensor to the sending wire at the gauge? (Green/Black)

Posted by: type47 Aug 13 2013, 04:43 PM

post pix of parts or part numbers