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Old 08-30-2009, 11:05 PM   #1
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Default Bypass the fuel inertia switch??

i bought a 91 ford 4.9 4x4. and it had a fuel problem, but it has a new fuel problem. i was under the dash and hit the inertia fuel swicth and now the fuel pump relay stopped clicking. Would it do any harm to just bypass that swicth?
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Old 08-30-2009, 11:17 PM   #2
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Shouldnt, but it is there for safety reasons, if you crash it kills the fuel pumps, if you bypass its recommended you soon get a new one if this one is bad.
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Old 08-31-2009, 07:15 PM   #3
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^ +1. If the switch won't reset with the pushbutton, the magnet has probably gotten weak - it's time for a new one.

One of those things you hope you never need, but will be glad it's there when the occasion calls for it.
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Old 12-11-2010, 07:51 PM   #4
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Question: On my 93 F250 there are 2 heavy wires and 1 light gauge wire feeding the inertia switch. I have jumped the two heavy ones and the pump activates but I'm wondering if I need to do something with the smaller 3rd wire. Anyone know? Thanks
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Old 12-11-2010, 07:51 PM
 
 
 
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