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How do you verify if the cutoff switch for a 2008 f450 is good or bad?

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  • Cars & Trucks Master
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If you are talking about the inertia switch for the fuel pump, you jumper it with a wire and check for voltage or check it with an ohm meter.

Posted on Jan 11, 2013

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Posted on Jan 02, 2017

satanchild30
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SOURCE: no brake lights or turn signals on 2008 F450

try checking all of your fuses and see which ones are blown. you have two sets of fuses and they are under the hood of the vehicle and under the dash on the driverside or in the glove box. if the don't work after changing the fuses then your wiring for the turn signals and brake lights need to be cheked from the fuse boxes to the swith for the trurn signal and to your brake lights

Posted on Mar 24, 2009

emissionwiz
  • 75235 Answers

SOURCE: 2008 Ford F450 fuel pump relay fuse keeps blowing.

the fuel pump and radio are not on the same circuit, most liokely the fuel pump is shorted, that is the most common cause, get under the truck and disconnect the fuel pump connector at the tank, if the fuse doesn't blow then u need a new pump.

Posted on Dec 05, 2009

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2008 Ford F450 fuel pump relay fuse keeps blowing.


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1 Answer

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try checking all of your fuses and see which ones are blown. you have two sets of fuses and they are under the hood of the vehicle and under the dash on the driverside or in the glove box. if the don't work after changing the fuses then your wiring for the turn signals and brake lights need to be cheked from the fuse boxes to the swith for the trurn signal and to your brake lights

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there is no reason to remove the cab even if you need to remove the engine it can be done with the cab in place

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