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Old 03-07-2006, 12:17 AM   #1
djwhetzel
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Location: Morgantown, WV
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2015 WRX STi Limited
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Default 1998 RS with EJ20G swap and Link ECM fuel gauge not working

I have searched for a long time looking for any information on this and found nothing. I have a 1998 RS with an EJ20G and a Link ECM. Everything seems to be fine other than the fact that my fuel gauge doesn't work. Does anyone know what I need to do to get it working? BTW the Link is a stand alone unit. Thanks for any help.
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Old 03-07-2006, 12:41 AM   #2
XENONSVX
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not sure how it is on a 98, but w/ my 93 the sender unit is connected straight to the cluster. I had a problem w/ mine, turned out the sending unit was bad. Might just want to try and ohm test on it, make sure it's working, then check the wires that goto your cluster. Hopefully you have a wire diagram that'll show you how the circuit works
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Old 03-07-2006, 01:06 AM   #3
White 2.5rs
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Hydra+HMist+PPG+35R=DEATH

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shouldnt have anything to do w/ the link iirc

make sure the sender has power and a signal, and that the fuel pump level sender uses the same voltage as the car needs
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Old 03-07-2006, 01:55 AM   #4
djwhetzel
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Thanks for the quick replies. Before I changed the ECU the fuel gauge was working so I'm pretty sure itís good. My wiring diagram does show a wire for the fuel level sensor. It is pin number 27 on the stock ECU wiring harness and it says that it should have 0.12 - 4.75 volts with the ignition switch on. It seems to me that this is the signal wire for the fuel gauge and that it needs to be spliced into one of the other wires on the stock ECU harness. I'm guessing that the signal went through the stock ECU and then to the gauge (I could be totally wrong though). I don't want to just start splicing it with other wires guessing where it is supposed to go. I didn't know if anyone else that has installed a stand alone unit had the same problem.
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Old 03-07-2006, 03:29 AM   #5
spulinup
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swapped GF8 with jdm ish

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When I wired up my ej20G in my 96 Impreza I had the same problem. My wire diagram showed that brown/yellow was the wire for the fuel level meter. It turns out that there are two brown/yellow wires. One was for reverse and the other was for the fuel level meter. I had them backwords. I changed them and everything is fine now. Hope this helps and good luck.
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Old 03-21-2006, 02:18 PM   #6
djwhetzel
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I found the problem and thought that I would share just incase anyone else ran into this problem. The factory plug for the factory ECU has grounds at various different places and I needed the ground for the "Control Systems" to be hooked up. As soon as I hooked that gound up, the fuel gauge started working and the temp gauge (which was sky rocketing in the red when my laptop said that I was only at 130 degrees) started working right. Thanks for all the replys and help guys.
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