S-10 :: 1996 - Fuel Sender Malfunction
Mar 14, 2012
My fuel pump went bad on my 2.2 96 S-10 so I bought and installed a AC Delco MU1781 which is supposed to be the newer style pump for this application. It came with a new pigtail connector which I spliced into my vehicle harness.
So I install the pump, everything works great. Then I go to fill up the tank with 18 gallons of fuel and my dash gauge is only at about 3/4 fuel. It will not go up to half. I thought it was kinda strange when I poured in 5 gallons initially and I was barely off of empty.
So I took the pump back out and when the float is flat I get 1.5 ohms resistance. At the full position its about 90 ohms. Is this the correct range for the s-10? My Alldata subscription does not give ohm values for the sending unit. Can any one chime in or have other had issues with the MU1781?
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