Question about 2002 Lincoln Navigator

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My car wont start, it is turning over but AAA said it may be fuel pump. how can I tell

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If the vehicle is fuel injected the Fuel rails that connect tot he injectors most often have a test valve built into them at the end. If you have fuel pressure the pump is most likely working. Otherwise your going to have to get a test set, some Auto Zone stores have one that can be basically rented, to install and test the fuel pressure.

Posted on Jan 02, 2011

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Being you have a throttle body, you have to have a fuel pump. when you turn the key to the run position, can you hear the fuel pump prime. if someone stands near the rear of the vehicle, they should hear a buzzing sound for about 5 seconds. You could try seeing, while trying to crank the vehicle, is disconnect the fuel flow line under the hood. When you try to start the car, fuel should go through this line. This will tell you the pump is working. If you look in your owners manual, under fuse and relay. one of these may be out. The book will tell you what fuse is what, and where the relays are, and for what. Your pump is located in the fuel tank, and hopefully its something simple. If you have to drop the tank, let me know, and I'll help you through that. It is not a friendly job. Hope this helps, and its something simple

Posted on Jan 02, 2011

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