SOURCE: fuel pump relay switch not working/ fuel pump emergency switch?
If the pump is making sound, then the relay must be ok.
It could still be weak, but you could tell with a pressure gauge.
(Harbor Freight sells a gauge kit cheap.)
But make sure the ignition is working first, by spraying in some starting fluid.
It is even sputters, then you know the ignition is ok.
If not, then check all the fuel injection connections.
The the temperature sensor and mass air sensor.
Use an ohmmeter, and check resistance against the norm.
SOURCE: where is the emergency fuel pump shut off switch located on a 1989 Mercury Grand Marquis
It is in the trunk, drivers side almost straight down from the trunk hindge.
Fuel pump not running?
http://schematicsdiagram.blogspot.in/2012/02/fuel-pump-not-running.html
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Fuel pump not working on 1991 Ford Ranger?
http://technoanswers.blogspot.in/2012/01/fuel-pump-not-working-on-1991-ford.html
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Fuel pump has no power on 2002 ford 350 7.3 diesel?
http://technoanswers.blogspot.in/2012/01/fuel-pump-has-no-power-on-2002-ford-350.html
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Emergency fuel shut switch on Ford car?
http://schematicsdiagram.blogspot.com/2011/12/emergency-fuel-shut-switch-on-ford-car.html
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How to jump fuel pump On Chevrolet Silverado 1500?
http://schematicsdiagram.blogspot.com/2011/12/how-to-jump-fuel-pump-on-chevrolet.html
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How to Increase gas mileage on 2011 2500HD Duramax 6.6?
http://schematicsdiagram.blogspot.com/2011/12/how-to-increase-gas-mileage-on-2011.html
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How to test Fuel Pressure and replace Fuel Pump?
http://repairhelpcenter.blogspot.com/2011/11/how-to-test-fuel-pressure-and-replace.html
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Fuel Running Lean
http://technoanswers.blogspot.com/2012/10/fuel-running-lean.html
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How to relieve fuel pressure?
http://technoanswers.blogspot.com/2012/01/how-to-relieve-fuel-pressure.html
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Refueling problem?
http://repairhelpcenter.blogspot.com/2012/01/refueling-problem.html
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Toyota Tercel consuming more fuel?
http://repairhelpcenter.blogspot.com/2012/01/toyota-tercel-consuming-more-fuel.html
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How to maximize fuel economy on your vehicle?
http://schematicsdiagram.blogspot.com/2011/11/how-to-maximize-fuel-economy-on-your.html
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Fuel gauge jumps from empty to full?
http://schematicsdiagram.blogspot.com/2011/12/fuel-gauge-jumps-from-empty-to-full.html
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Gas gauge stuck on empty on 2002 Mercedes Benz 240c?
http://repairhelpcenter.blogspot.in/2012/02/gas-gauge-stuck-on-empty-on-2002.html
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No power to the control side of the fuel pump relay?
http://schematicsdiagram.blogspot.com/2011/12/no-power-to-control-side-of-fuel-pump.html
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These will help.
Thanks.
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