Skib Posted June 16, 2010 Report Share Posted June 16, 2010 Gas gauge on the goon is out, Iv pulled the regulator deal off the back and cleaned it all up and the two wires that go to the sender in the back on top of the tank. any other suggestions? Quote Link to comment
fo0manchu Posted June 16, 2010 Report Share Posted June 16, 2010 was it working before? Quote Link to comment
metalmonkey47 Posted June 16, 2010 Report Share Posted June 16, 2010 Is the unit in the tank coroded? Try pulling it and testing for resistance to see if it's functioning. Quote Link to comment
djaztek12 Posted June 16, 2010 Report Share Posted June 16, 2010 welcome to the club :lol: Quote Link to comment
MicroMachinery Posted June 16, 2010 Report Share Posted June 16, 2010 Try grounding the wire going to the sending unit. The sending unit acts as a variable resistor, and based upon the resistance provided, it gives you a different reading on the gauge. If you ground the wire from the gauge, then it should sweep to "FULL". If you get no movement in the gauge when you ground it, then something's going on with the gauge. If it moves, then you know to start investigating in the wiring to/or the sending unit. Quote Link to comment
Skib Posted June 16, 2010 Author Report Share Posted June 16, 2010 was it working before? ya Quote Link to comment
yellowdatsun Posted June 18, 2010 Report Share Posted June 18, 2010 Grounding the sender works wonders. Give you an excuse to pull the sender out anyways and have a peek at it. Quote Link to comment
datzenmike Posted June 18, 2010 Report Share Posted June 18, 2010 Skib if the temp is working then it's not the voltage regulator in the dash cluster. Grounding the yellow wire at the tank sender should cause a FULL reading on the gauge if it is working correctly. Because there is a single wire to the tank the tank must be well grounded for a good return. If all the above passes then it must be the internal sender. The sender wires are hair thin. Quote Link to comment
djaztek12 Posted June 18, 2010 Report Share Posted June 18, 2010 Skib if the temp is working then it's not the voltage regulator in the dash cluster. Grounding the yellow wire at the tank sender should cause a FULL reading on the gauge if it is working correctly. Because there is a single wire to the tank the tank must be well grounded for a good return. If all the above passes then it must be the internal sender. The sender wires are hair thin. my goon dose the same thing, i have an after market gage when i hook up the yellow wired to the gage it marks full, then when i hook up the black wire from the sending unit to gage it goes all the way passing the empty reading. would that be that my gage is no good. :huh: Quote Link to comment
datzenmike Posted June 18, 2010 Report Share Posted June 18, 2010 Not familiar with the gauge you are using. Usually the Nissan sender is 10 ohms (FULL) and 80 ohms (EMPTY) resistance. Try reversing your wires or check the specs on the gauge you have. Quote Link to comment
yellowdatsun Posted June 18, 2010 Report Share Posted June 18, 2010 Datzenmike has a good point, and I've used it to test many gauges. Works the same for the temp gauge. Ground the gas tank sending unit to the chassis, and the gauge should read full. If it doesn't, the gauge/wiring is bad. If it does read full, the sender is bad. Easy way to eliminate problems. Quote Link to comment
fo0manchu Posted June 19, 2010 Report Share Posted June 19, 2010 skib your screwed, might as well give up and send the wagon my way... hahaha :lol: Quote Link to comment
jesusno2 Posted June 19, 2010 Report Share Posted June 19, 2010 dont feel bad skib i have a brand new nos sender and my guage still dont work :angry: Quote Link to comment
djaztek12 Posted June 19, 2010 Report Share Posted June 19, 2010 Datzenmike has a good point, and I've used it to test many gauges. Works the same for the temp gauge. Ground the gas tank sending unit to the chassis, and the gauge should read full. If it doesn't, the gauge/wiring is bad. If it does read full, the sender is bad. Easy way to eliminate problems. yep that's what it dose, i have one of those kragen gages. Quote Link to comment
Skib Posted June 19, 2010 Author Report Share Posted June 19, 2010 Skib if the temp is working then it's not the voltage regulator in the dash cluster. Grounding the yellow wire at the tank sender should cause a FULL reading on the gauge if it is working correctly. Because there is a single wire to the tank the tank must be well grounded for a good return. If all the above passes then it must be the internal sender. The sender wires are hair thin. I dont have a temp gauge :P Iv always had an after market one. its just a blank black plate now. it comes up to 1/2 tank from time to time when I fill it up. but it dosent always do it and it dosent always stay. I got a new flasher for the blinkers and they still dont work :rolleyes: Quote Link to comment
djaztek12 Posted June 23, 2010 Report Share Posted June 23, 2010 here a picture of my sending unit :unsure: Quote Link to comment
hang_510 Posted June 23, 2010 Report Share Posted June 23, 2010 use a rubber on the delicate wires... (a #2 pencil eraser :fu: ) Quote Link to comment
djaztek12 Posted June 23, 2010 Report Share Posted June 23, 2010 use a rubber on the delicate wires... (a #2 pencil eraser :fu: ) wow :fu: Quote Link to comment
hang_510 Posted June 23, 2010 Report Share Posted June 23, 2010 wow :fu: :huh: you think im lying? Quote Link to comment
izzo Posted June 23, 2010 Report Share Posted June 23, 2010 A pencil eraser is in fact a good tool to clean things. Its used a lot on computer cards, the little gold pins etc. Keeps finger grease and other contaminates off there. Quote Link to comment
djaztek12 Posted June 24, 2010 Report Share Posted June 24, 2010 :huh: you think im lying? no okay. ill try that. on the other hand i was comparing sending units. and it seems and looks very similar as a old vw bug one. i got try one to see if it works.lol Quote Link to comment
I'm BLUE Posted June 24, 2010 Report Share Posted June 24, 2010 A pencil eraser is in fact a good tool to clean things. Its used a lot on computer cards, the little gold pins etc. Keeps finger grease and other contaminates off there. Yes Indeedy it can work :hyper: Quote Link to comment
hang_510 Posted June 24, 2010 Report Share Posted June 24, 2010 I got a new flasher for the blinkers and they still dont work :rolleyes: are the wires in good cond? did you get the 'heavy duty' version? cant remember why, but that makes a difference and works in both spots. Quote Link to comment
hang_510 Posted June 24, 2010 Report Share Posted June 24, 2010 i got try one to see if it works.lol check the impedence of the VW unit and if the same (0-90) it should work with the stock gauge. Quote Link to comment
Spades Posted June 26, 2010 Report Share Posted June 26, 2010 my wagons gas gauge only works up to the 3/4 full mark, when it shows i am on E i still have well over a quarter of a tank. My factory temp gauge barely works as well, I figure its the voltage regulator, i just never bothered to check it cause I didn't figure I could find one for it. I haven't come across one yet...can you even get a new voltage regulator for a 72 510 wagon? but yeah, try grounding it out and watch the needle. if the needle goes up in the dash, check the sending unit. Do you own a ohm meter? if so, hook it up to the leads and watch what the ohm meter does when you move the float for the sending unit. Quote Link to comment
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