Question about 2001 Mercury Sable

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Fuel Pump is not activating when ignition switch is turned, I can hear the clicks in the relay box. Does this mean the relay went bad?

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Not usually, when you hear clicks it means the relay is switching. Its probably the fuel pump that needs attention.

Posted on Nov 19, 2009

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Have you tried to reset the fuel pump cut-off switch. This switch maybe located in the trunk. Your owner's manuel will tell you where. This switch trips if jolted to shut off fuel incase of an accident. Have someone turn the key on and off while you listen at the rear of the car (as close to the fuel pump as possible) for a short whirling sound. This is the fuel pump pressurizing the system. This will indicate the fuel pump is working but not pumping. Seperate a fuel line fitting at the fuel rail under the hood and cycle the key on and off. This will tell you the pump is actually pumping.

Posted on Dec 04, 2009

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What is the average price for a fuel pump. I think mine just died


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1. Take the gas cap off and get someone to switch the ignition on while you listen for the pump operation.. If operable the pump will run for about 3 seconds and then stop.

2, Check the fuse for the pump is sound and not blown.

3. Check the Relay for the pump. Locate the relay in your fuse and relay box and have someone switch the ignition on and off a few times. You should hear the relay clicking. If not it is faulty and needs to be replaced if you want power to the pump.

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1 Answer

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Hi,

To my knowledge, there is no separate switch to activate the fuel pump. The fuel pump is one of the many electrical devices powered by the ignition switch when turned on. This is necessary since the fuel pump must be active if and when the engine is running. Due to electrical design, that is to reduce current passing through the ignition switch, a relay is used to along with the ignition switch.

Often, this relay would be among the many relays in the fuse/relay box in the engine compartment pretty close to the battery. However, in your particular model and to my knowledge, it is under the dashboard. More particularly, the fuel pump relay is under and to the right of the glove box above the ECU. There would be two (2) other relays in that area and the fuel pump relay is the last almost hidden.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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