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fuel gauge over full and no power to fuel pump


97blazzzerls
06-29-2011, 08:15 PM
hey guys help me out here ive got a 97 blazer ls 4door and i have no power to the fuel pump/sendingunit and my fuel gauge lays wayyy over full when i turn the key on ive changed the sending unit and ive changed the ignition switch but still no power i tryed primeing with a 12v fused from batt to primer cable by firewall and still nothing so i switched the relay around with another one and still nothing please help:mad::mad::mad:

oldblu65
06-29-2011, 10:30 PM
Are you saying your fuel pump doesn't run or that your fuel gauge is reading full all the time . A fuel gauge that always reads full is likely caused by an open circuit ( broken wire ) in the wiring between the gauge and the sending unit in the tank .

97blazzzerls
06-30-2011, 08:44 AM
neither i have no power to the pump and the gauge is laying over full

97blazzzerls
07-06-2011, 11:05 AM
i also have no spark at all

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