Mine is doing the same thing, all others work fine. Mine happens around 1/2 tank goes to full, then back to where it should be. I'm guessing its in the sending unit/Float in the tank. I've got some vacation scheduled for June, doing ball joints and just going to add the tank to the list.
I recommend to anyone to do the intank and prepump mods. These mods are great and only cost about $30 to do. If you have to drop the tank anyway to fix the gauge then it would be real easy to do the mods then too. Shutterfly | View Shared Pictures
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