HFCM new vs old style - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 06-15-2011, 07:19 PM Thread Starter
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HFCM new vs old style

I went to my dealer today to buy a fuel pump, they had none in stock so I ended up getting the whole hfcm aka fuel pump assembly (that is what the box says). My Ex has the old style with the heater and there is no corrosion inside, so its still good but the pump was shot. For now I put the new one in but am contemplating pulling the new fuel pump out and putting it in the old style hfcm.

What is better for my truck, seeing that the winters get really cold here -40 happens. Or does it really matter seeing that the 06-07's came with the new style from the factory, from what I understand.

If you had the choice what would you do?

2005 Excursion Limited 6.0 4X4
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Edge Insight CS, with universal 0-100psi sensor for fuel pressure
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post #2 of 5 Old 06-16-2011, 04:04 AM
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Here in NY we don't see the same extreme temperatures you see up north but I changed my HFCM cover last year removing the heater and saw absolutely no difference in the cold months.

- Karl
2003 F-250 Crew Cab Short Bed Lariat PSD 6.0 Automatic FX4 Edge Insight with EGT Probe. Coolant Filter. All 6.0's need gauges
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post #3 of 5 Old 06-16-2011, 02:23 PM Thread Starter
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Does anybody know the part # for the updated harness that deletes the connector and wires for the heater? My local parts man is having a hard time finding it.

2005 Excursion Limited 6.0 4X4
PHP tuned Swamps 58v FICM
Edge Insight CS, with universal 0-100psi sensor for fuel pressure
SCT tunes by Quick Tricks and Gearhead
Sinister EGR Delete and Coolant filtration kit w/Cat EC-1
6.4 banjo bolts
Ford fuel pressure spring kit
High Idle Mod
ARP head studs
Magnaflow 4" turbo back w/muffler
Powermax turbo
Firestone Ride-Rite air bags
Retro Solutions 55w 4300k digital HID's
Clarion NX500 double din DVD/Nav
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post #4 of 5 Old 06-16-2011, 02:27 PM
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leave the pump the way it is with no heater, the heater can cause corrosion problems in the HFCM. as long as you're running #1 and anti-gel you shouldn't have any problems

don't know the harness # off hand, let me see if i can find it. we just sold one last week too

6C3Z-9F759-A there you go. one 2 connector harness for the new pump

-Matt

Ford Senior Master Tech

2015 F-250 XLT 6.7L

2006 F-250 6.0L SOLD

Last edited by sinner6.0L; 06-16-2011 at 02:31 PM.
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post #5 of 5 Old 06-16-2011, 02:34 PM Thread Starter
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Thanks sinner6.0L

2005 Excursion Limited 6.0 4X4
PHP tuned Swamps 58v FICM
Edge Insight CS, with universal 0-100psi sensor for fuel pressure
SCT tunes by Quick Tricks and Gearhead
Sinister EGR Delete and Coolant filtration kit w/Cat EC-1
6.4 banjo bolts
Ford fuel pressure spring kit
High Idle Mod
ARP head studs
Magnaflow 4" turbo back w/muffler
Powermax turbo
Firestone Ride-Rite air bags
Retro Solutions 55w 4300k digital HID's
Clarion NX500 double din DVD/Nav
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