3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Weird FP readings

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Old Jun 30, 2007 | 01:14 PM
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From: Southern Utah
Weird FP readings

Hi- I am starting to get some weird readings on my fuel pressure gauge (Commander) such as fluctuating pressure (fluctuating from 0 to 10 psi and everywhere in between). I'm thinking my stock LP is on it's way out? Any ideas? Thanks!
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Old Jun 30, 2007 | 04:44 PM
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OK- Update: I had the sender for the Commander mounted on the outlet of the FF housing. I figured maybe I wasn't getting a good ground there because the housing is aluminum. I moved the sender to the CP3 (where Quadzilla recommends ) and voila, it's working again. I had mounted it on the FF housing because the sender won't fit at the Cp3 with the Jacobs Brake. I've since decided to get the BD Brake instead, so I'm back in business. I am getting 6 psi and its dropping to 3-4 psi under acceleration, so I'm still think the LP is getting weak. Morale of the story: Quadzilla is smart, I'm not, Quadzilla is good looking, I'm not so much...
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