I replaced the fuel pump ass'y in my '92 RRC last summer. It was a drop-in from AB, and the power plug was mis-wired, which I discovered after installation. The send wire for the fuel gauge and the power wire to the pump were swapped, so when I plugged it in it sent a full 12v to the fuel gauge (and no power to the pump, so it didn't work). After I fixed the wiring, all was well, except my fuel gauge read wrong. When the tank was full, the needle would rise to the limit of travel (past the thick white "full" mark), and when the tank was near empty, it never dropped below about 1/3 on the scale. The low fuel light continued to work correctly.
I pulled the pump unit out in the fall to fix a tank leak, and when I put it back, voila! The fuel guage started working correctly again. I thought perhaps I had not lined the float up in a good spot originally, and it was hanging on some of the baffling in the tank.
Last week during our PNW "ARCTIC BLAST SNOWZILLA!" winter weather, I was driving around town in the RRC. All the manhole covers had big frozen lumps of ice on them, like speedbumps. After bounding over a few of these, the fuel gauge went AWOL again. Today I pulled the pump unit, checked the float position, etc., but no fixy.
Anyone else had a similar problem? Is there a way to calibrate the gauge? It's not that big a problem, as the low fuel light always comes on at the right time, but it does bug me.
I pulled the pump unit out in the fall to fix a tank leak, and when I put it back, voila! The fuel guage started working correctly again. I thought perhaps I had not lined the float up in a good spot originally, and it was hanging on some of the baffling in the tank.
Last week during our PNW "ARCTIC BLAST SNOWZILLA!" winter weather, I was driving around town in the RRC. All the manhole covers had big frozen lumps of ice on them, like speedbumps. After bounding over a few of these, the fuel gauge went AWOL again. Today I pulled the pump unit, checked the float position, etc., but no fixy.
Anyone else had a similar problem? Is there a way to calibrate the gauge? It's not that big a problem, as the low fuel light always comes on at the right time, but it does bug me.