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Balky/Limp starts on 2008 CS, fuel pump/fuel filter replacement?


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The issuse had started a few weeks back before Christmas. I originally the truck had no codes, just would limp to a start when it got really cold out. We are talking about < 0 degrees celsius. I then got a code of P2404 and replaced the vacuum pump as another member had that issue. Once I replaced it, I thought things where better, then, I started getting the bumbling start more frequently. I looked at my old HPFP and replaced it with the updated part number. Once, I replaced that, things seemed to be ok. Then a week later, I still get bumbling/balky starts every once in a while.

I hear the pumps prime when I open the door and I tried to pull the fuses to confirm, but a few questions for you.

When pulling fuses 13/14, should the truck die/stall out when pulled?

When I start the truck with either 13 or 14 in the fuse box, should the truck start?

When you connected the fuel pressure gauge to test the bar level, where did you connect it to?

Also, if my pumps are good, how do I test the fuel filter directly or do I just replace it?

Edited by bobo83
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