Lift Pump?
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Location: Auburn, CA
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Lift Pump?
My Fuel Pressure gauge has been fluctuating for a while between 10 and 2lbs at WOT. Idle always was 13 to 15lbs. (I was thinking the isolator was messing with me) Today it started at 14lbs then dropped to 0 after about 2 seconds. I shut it her down then restarted it did it again, 14lbs then 0. I bypassed the Isolator and restarted the truck. Again 14lbs then 0. Is it the Lift pump or is there a elect problem. You can hear a click like a relay when it drops to 0...
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