Fuel pump relay on 1998 ford f150 4.2 L

Asked by Jan 19, 2017 at 04:59 PM about the 1998 Ford F-150 STD 4WD SB

Question type: Maintenance & Repair

I have a 1998 ford f150 that sat with a half tank of gas for 8
years. Trying to start it it cranks but won't start. Fuel pump
relay clicks on and off several times when key is put to run.
The fuel pump never sounds like it is running. What do you
think.

2 Answers

78,005

May want to start with replacing the relay. After that it is a matter of tracing the power line to see where it starts and if it is getting back to the fuel pump. May be a bad ground back at the fuel pump. Since it turns over, check to see if you have spark.

21,690

A relay is nothing more than a switch. A small amperage circuit used to switch one of larger amperage. If the relay is clicking it's either bad or the flow of current to the relay is being interrupted by a fault in the circuit or a lose ground somewhere.

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