2003 6.0 vacuum pump troubles - Ford Powerstroke Diesel Forum
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Old 11-25-2013, 03:34 PM
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2003 6.0 vacuum pump troubles

Hey guys I just got done studding a 03 6.0 after getting truck running the vacuum pump is inop. It is not getting power or ground at the plug for the pump.by the way I did studs with cab on. I check all connections I feel pretty confident everything is plugged in. I also checked the fuse under the dash which I believe is f.28 or 27 I checked it also it was good. This truck has 2 relay boxes under the good but I can't get a definite answer on what they control. I probed the wire at before and after the connector on the driver side and it doesn't have power there either. Any suggestions or guidance would be greatly appreciated! Thanks
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Old 03-04-2014, 11:10 AM
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There are 2 relays for the 4x4 one locks it in the other locks it out they are right by the brake reservoir or battery!! Hope this helps

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