what voltage should be at inertia switch on a E 150 van


Asked by eagle124 May 13, 2013 at 04:39 PM about the 1992 Ford E-150

Question type: Maintenance & Repair

I' m reading 6.8 volts there and at fuel pump but12 v at fuel pump fuse

2 Answers


you should have 12v at the swtich.

1 out of 1 people think this is helpful.

kbro is right, it should be the same voltage in as out of the switch. Check the supply side of the inertia switch, it should be battery voltage, then check the load side, voltage should be the same. The inertia switches do fail and won't deliver full voltage to the fuel pump. Also make sure that the connector is in good condition as they have been known to go bad also.

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