brat1709 Posted October 16, 2003 Share Posted October 16, 2003 1984 Subaru S/W with digital instumental cluster. I've tried replacing the whole cluster 3 times , and still no go.(3 diffrent clusters. I'm done fixing and now want a remedy. Which univesal fuel Level Gauge or modification , would work with a subaru OEM sending unit? Link to comment Share on other sites More sharing options...
calebz Posted October 16, 2003 Share Posted October 16, 2003 how about the sending unit? is it possible it is bad? Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 16, 2003 Share Posted October 16, 2003 Yeah - definately check out the sending unit - makes sure it has a good ground wire. The sending units (I happen to know this cause I have swapped tanks) are the same for digital, and analog gas gauges. GD Link to comment Share on other sites More sharing options...
brat1709 Posted October 16, 2003 Author Share Posted October 16, 2003 Hi Calebz. I did check the Fuel sendin Unit with a vom meter. Resistance noted throughout. I even tried a Mechanical gauge fuel sending unit, and noticed that resistance is backwards. I was even afraid that I ruined the the gauge, since prior to me someone grounded the fuel sending unit to ground, utilizing a non subaru sending unit. Its not easy finding these instrumental clusters, and the other two I tried , the speedos did not work well.... Any suggestions will help, since I'm at the confusion stage:( Hugo/So. CA Link to comment Share on other sites More sharing options...
brat1709 Posted October 16, 2003 Author Share Posted October 16, 2003 Here are the copies out of the FSM regarging the sending units. The resistance operates in reverse, for the Digital Gauge -vs-the Mechanical Gauge. I did attemp to add ground, but no go. Link to comment Share on other sites More sharing options...
Turbone Posted October 16, 2003 Share Posted October 16, 2003 The digi and analog sending units are different. I would definately try another sending unit, if you can find one. Let me know, I think I may have one. Rob Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 16, 2003 Share Posted October 16, 2003 I have personally swapped tanks from a 4WD DL with analog guage, to a 2WD GL with digi-dash. Both cars work just fine - and the tanks both retained the same sending units. I don't know if this is a freak thing, and I got lucky, but I'm betting that the guage doesn't really care one way or the other - or maybe it's a DL guage thing? GD Link to comment Share on other sites More sharing options...
Turbone Posted October 16, 2003 Share Posted October 16, 2003 So you didnt swap tha actual gauges, but complete tanks? Maybe somehow that had something to do with it? Just one of those Soobie Quirks I quess:cornfuzz: Rob Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 16, 2003 Share Posted October 16, 2003 I had to swap the tanks cause I was converting the car to 4WD. the other car was put back together as a 2WD, and lives on still. Now that I think about it, I probably will swap the sending units out as niether seems to be accurate (fill the tank on the 2WD, and it goes to 3/4 on the guage....), but it does not explain your problem of having no reading at all. Both guages DID register with the tank full, and do operate fine - although they are not accurate. GD Link to comment Share on other sites More sharing options...
TomRhere Posted October 16, 2003 Share Posted October 16, 2003 Would check the condition of the electrical connection for the sending unit at the tank. The one on my '86 was way corroded. I just removed the connector and spliced the wires together, using solder and shrink-wrap. Link to comment Share on other sites More sharing options...
MilesFox Posted October 16, 2003 Share Posted October 16, 2003 what tom said. the wiring should come up into the car at the [assenger side taillight and along the side, you may be able to access some of it for poking with a voltmeter under the rear seat (it flips up, exposing the floor, brake, fuel lines and some wiring) Link to comment Share on other sites More sharing options...
Hondasucks Posted October 16, 2003 Share Posted October 16, 2003 my 83 GL-10 when I put an analog dash in it, it read full when full, 1/2 tank was actually 3/4 tank, 1/4 tank was really 1/2 tank, and then E was E :-P Link to comment Share on other sites More sharing options...
brat1709 Posted October 17, 2003 Author Share Posted October 17, 2003 Fuel sending unit was tested with an VOM meter. Resistance is intact. The only think I've not checked is the actual wiring to the gauge. What should I be looking for in the wiring. I'm assuming there there could be a break in the wiring going from the tank to the dash. Is there any checks I can do to the wiring at the gas tank, to check for voltage or continuity to ground? Maybe its the grounding at the fuel sending unit. I'm assuming grounding must be internal, explaining the reason for the two wires. What can I do to test wiring. Anyone have the wiring schematic for the wires on the subaru or know the correct colors I should be checking for continuity, in case there's a break? Hugo/So. CA Link to comment Share on other sites More sharing options...
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