Are these two issues linked to low fuel pressure? - Ford Powerstroke Diesel Forum
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Old 01-28-2014, 03:51 PM
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Are these two issues linked to low fuel pressure?

I was starting to think I had a low fuel pressure problem due to my f250 being quite sluggish and sometimes chugging when accelerating up hill. However, a few times in the last 2-3 days, when I tried accelerating from a stop sign, the RPMs raised and then dipped way down to about 500. I let off the gas and then it would go back up to the normal RPM and accelerate fine. Today though, she died under acceleration. The engine was definitely cold, but I was taking it easy.

Now in the last few days, it has been really damn cold here in Wisconsin. Today it got down to as low as -15F and it was sitting outside while I was at work. (I do use an anti-gel as well)

Do you think there could be a low fuel pressure causing both of these (dirty in-tank filters or something of the sort) or could this all be linked to the cold? I have only owned this truck in the winter so I am unsure how much of an effect it is having on my truck.
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Old 01-28-2014, 06:38 PM
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Could be fuel...you'd have to check pressure to know for sure. How's your fuel filter? Might be cps related too

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Old 01-28-2014, 06:43 PM
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I replaced the fuel filter today. The bowl had very clean diesel in it. When I was pulling away from the shop after installing the filter it stalled.

Is there a way to see if the CPS had been changed at an earlier date?
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Old 01-28-2014, 06:51 PM
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Unless you have records, no. Put a scan tool on it, watch your icp and vitals, see if you can tell what's going on

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Old 01-28-2014, 10:51 PM
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doubt its fuel pressure. fuel pressure would be missing injectors and super high EGT's (600+ degrees at like 10mph)
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Old 01-30-2014, 09:31 AM
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I'm thinking check the ICP, CPS, IPR but could be fuel pressure
Without a scan tool you cant know for sure and a fuel pressure gauge
I'm currently fighting an issue that started off like that, now it won't start but since I've replaced my ICP, CPS, and IPR and have my in tank mods done I'm chasing a fuel issue.
After I replaced my IPR my truck ran a lot better until this current issue
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