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89 F350 front tank pump stays running

Old Jan 25, 2009 | 12:26 PM
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Default 89 F350 front tank pump stays running

It runs even when I remove the green relay. There is a wire connected to #15 fuse location that runs to the tank selector switch. Only when I remove this wire, the fuel pump stops running. I'm guessing my relay has been bypassed, but why all of the sudden would this problem pop up rather than all along?
 
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