Question about Ford F-150

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1990 f150 xlt... After washing the engine it's been dead for over a week. I try changing all the fuses, fuel pump relay, eec relay, double checking all connectors. The fuel pump don't turn on/no pressure on fuel rail. If I put gas thru the intake hose it will start for a few seconds. If I hot wire the pump, the pump will run but the car still won't start. Inertia switch also checked ok!! Any help greatly welcome since this supposed to be my daily driver... Thanks in advance!!

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  • cdhrusso1 Mar 27, 2011

    If I put gas in intake it will run. It seems the pump and or injectors are not working!!

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Lots of possibilities here especially with water involved. Sounds as if the computer is not controlling injectors as it will start if direct fuel is applied. Possible computer damaged due to direct water contact. Another possibility is no power supply to the computer. Check the main relay for power and ground supply. The main relay should have one constant supply of battery voltage at all times. It should have another supply of battery voltage with the key in the on position. One wire will be ground and the other will supply power to the ecm once activated. If you are missing either power supply to the relay, the vehicle will not start on its own . One power supply is provided by the ignition switch and the other is provided by a fusable link. MAke sure there are no burned out links that may be causing this problem

Posted on Jan 29, 2016

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If you used high pressure washer you might have broken a wire. Check to ensure all your ground wires and positive/negative wires are connected. Ensure the distributor cap is dry and all the wires are connected inside.

Posted on Jan 29, 2016

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Make sure you don't have water/moisture in the distributor cap/rotor, check/replace your ignition module and check your starter solenoid.

Posted on Mar 27, 2011

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