WTF is my fuel pressure doing?? - Ford Powerstroke Diesel Forum

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post #1 of 3 Old 08-18-2010, 01:37 PM Thread Starter
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WTF is my fuel pressure doing??

I have an Isspro EV2 FP gauge. Just bought a couple of months ago. As you can see, it's pretty much going crazy. I've checked my grounds, they're all good. I've tested all the voltages and everything is within spec but when I'm testing it, the gauge is always holding steady at 58 psi. Once I start moving, it starts acting up. At first, I thought the pump was losing prime but it still does it with a full tank. Just changed filters too. You think bad gauge sensor or pump motor issues? EDIT** it's plumbed into a FASS 150




2005 CC FX4. Cutting Edge Diesel Compounds and everything else that goes with them.

Last edited by stroke of luck; 08-18-2010 at 01:42 PM.
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post #2 of 3 Old 08-18-2010, 01:39 PM
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when you nail it, what does it drop to?

2000 F-250 4x4 7.3
BTS Transmission - 6.0L Cooler
GTP38r
Full Fuel System with Return
2-Stage W/M & Nitrous
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post #3 of 3 Old 08-18-2010, 01:41 PM Thread Starter
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well if it's not jumping around, then it only drops 1 or 2 psi. I forgot to mention that the sensor is plumbed into my FASS 150.

2005 CC FX4. Cutting Edge Diesel Compounds and everything else that goes with them.
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