ballstix

Hey guys, just need some advice on my gas gauge. It is constantly reading completely FULL, I disconnected the sending unit from underneath the bumper and the gauge does not respond. Just curious as to what I should work towards next.

865.0trunk

when your gas gauge reads full it means it is not grounded properly. open the trunk to the right of the spare tire there will be 4 wires coming out of the floor. the 2 black should be grounded, usualy grounded near the trunk latch. check to see if they are grounded

ballstix

Im going ot check that right now, Oh by the way its an 87 hatch.

865.0trunk

wires are stil in the same place, i got all my wiring from an 88 hatch to swap over to my 86 trunk, all the same stuff

ballstix

I checked it everything is in place and looks good, all the wires are in good shap they look like hmm my dummy lights for the low fuel marker fluids and oil look like their not even there in the gauge cluster. I dont know if those are tied into the fule gauge in anyway.

ballstix

Also, the 4 wires that come out of the bottom of the trunk red yellow and black and black? Where should the ground be located because they all run together back toward the front of the car.

john1614

funny, my coupe just started doing this very same thing. what did you finally find out about this problem. curious, thanks.

stanglx2002

its a common problem the fuel sending unit needs to be changed bc the old one is gummed up