Im surprised my truck is still running - Ford Powerstroke Diesel Forum
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  #1  
Old 09-04-2012, 06:15 PM
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Im surprised my truck is still running

so my lift pump is dying and it barely works at this point (the one mounted to the frame rail) is making some horrible noises like its getting caught up. im replacing it tomorrow but i dont know how this thing is still running without the pump working. no driveability issues what so ever.

my only guess is that the in tank fuel pump is working its *** of to supply the needed pressure. anyone else ever had this happen?
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Old 09-04-2012, 06:28 PM
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Our trucks only have 1 pump, unless youve modified and added a sump pump or something of the sort. Also would be a great time to do the hutch and harpoon mod.

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Old 09-05-2012, 11:29 PM
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^whs, your pump may not be holding pressure but you would know if it wasn't working pretty quickly.
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Old 09-06-2012, 04:35 AM
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Have any way of watching your fuel pressure? That would be the easiest way to tell if your pump is getting weak, or your mixing valve in the tank is gunked up..

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Old 09-07-2012, 09:23 AM
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OK I was under my truck today and noticed that thing you think is a pump also. If it's not a pump what is it and why does it have wires running to it?
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Old 09-07-2012, 09:43 AM
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You have a sending unit and your fuel sensor on top of the tank, then on the frame rail, close to the transmission is your fuel pump.

There's not much else I can think of that has wires and resembles a fuel pump..

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Old 09-07-2012, 10:03 AM
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Quote:
Originally Posted by codyryan07 View Post
You have a sending unit and your fuel sensor on top of the tank, then on the frame rail, close to the transmission is your fuel pump.

There's not much else I can think of that has wires and resembles a fuel pump..

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Thanks. I was thinking the pump was in the tank.
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Old 09-07-2012, 10:04 AM
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Quote:
Originally Posted by 2000_f350 View Post
Thanks. I was thinking the pump was in the tank.
No problem. I believe the obs had an in tank pump but not sure.

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Old 09-07-2012, 02:17 PM
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No, the OBS only has a mechanical pump on top of the block.
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