Question about 1999 Ford Expedition
Replace fuel filter if it has not been done in a while. Also check fuel pump pressure with a gauge and compare with spec. When key is turned "on" the computer turns on fuel pump via relay. If the computer does not see rpm signal (engine start) within approx. 2 seconds it turns the fuel pump back off. Cycling the key often helps to build up fuel pressure sufficient to start when filter is plugged or pump pressure is weak.
Posted on Jun 29, 2009
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Posted on Jan 02, 2017
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