Question about 1999 Ford Taurus
Fuel pump comes on when key is turned over filter not clogged (new) what else could b wrong
Disconnect the fuel line at the filter, wrap in cloth and put a jar over it. Activate the fuel pump and see if there is flow. Just because the fuel pump whines does not mean it is pumping fuel. I have seen the impellers and seals fail but the motor work, especially after running out of gas when ethanol enhanced gas was used. If there is flow, Follow the lines up to the engine, paying close attention to the jacking areas. I have seen garages crush fuel lines under the car with their floor jacks. If that's all OK, locate the rubber section of the return line between the engine and firewall. Working from underneath, up, it's the second largest line under the car. Pinch off the rubber line and try starting the car. If it starts and runs, replace the fuel pressure regulator which is stuck open.
Posted on Aug 12, 2008
With a fuel gauge, check for fuel pressure at fuel rail. make sure there is at least 35 psi. if no pressure, check for poewer/ ground at fuel pump plug. There should be power at the pink wire when key is turned to the on position. If there is power/ground, replce fuel pump. If no power, check fuses, pump relay and innertia switch(located in trunk). If pooped up, resset switch by pressing down on red bottom.
Posted on Aug 08, 2008
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Posted on Jan 02, 2017
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