RotorJoe

I am replacing my fuel pump and while I am in the tank I would like to check my fuel float level. Does anyone know what the resistance should be from empty to full on the little float that sits in the fuel tank? It would be the Green and Red wires running to the connector at the top of the “bucket” (for a lack of a better word) that sits inside the fuel tank. I have been looking at the manual (section z pg 46) and others, but I can’t find the resistance value for the float. When my fuel gauge reads empty I have about 5 gallons left in the tank and I have only once barely seen my fuel warning light come on if I run it dangerously low. I would just like to double check to see if all is working correctly. Thanks

RotorJoe

I called Mazda and they want $111.70 for the fuel sender (this is the float deal in the tank like on a toilet which is the part in question) and they want another $39.70 for the strainer.

BTW I should have bought the walbro off of ebay. It's cheaper then the Rx7store and looks like it comes with the strainer and a new wiring harness. Oh well, Jason's a great guy, you live and learn.

Also a bump.

Thanks

RotaryResurrection

With the bracket assy out of the tank, plug it up to the harness, and turn your ignition key on. With the arm at the bottom, see if the gauge bottoms out. With the arm extended up fully, see if the gauge maxes out. IF not, it's likely the sending unit. You can also bend and adjust the arm if you like your gauge to be calibrated one way or another...some people like their gauge to indicate E earlier, and some like it to be actually accurate so that E means you have <1 gallon left.