DRFTEM Posted October 11, 2009 Share Posted October 11, 2009 Ok so I have a 74 260z and since ive owned this car the fuel gauge has been reading way below the empty point. so I was looking for a new gauge and was told check the wiring to the sender unit. so i started testing for voltage to the sender and got none. so i moved up to see if the gauge was getting power and it is. so i check with the gauge plugged in to see if the yellow signal wire is getting power through the gauge. on initial start up it sends 10-12 volts. after idling for a couple seconds the voltage signal start jumping from .8 to 8 volts. with my voltmeter hooked up to it the gauge reading didnt change.so does this sound like a faulty gauge? also the ampmeter when the car is running stays in the dead center. it never moves? Quote Link to comment Share on other sites More sharing options...
Edward Posted October 11, 2009 Share Posted October 11, 2009 do you have a spare gauge you cant run test with ? that would eliminate that theory. Quote Link to comment Share on other sites More sharing options...
DRFTEM Posted October 11, 2009 Author Share Posted October 11, 2009 no i dont. Im gunna probably pull one from the junkyard today if i find one. Quote Link to comment Share on other sites More sharing options...
zuum Posted October 13, 2009 Share Posted October 13, 2009 The sender in your tank acts like a potentiometer or sorts... it may be bad. Quote Link to comment Share on other sites More sharing options...
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