air dog2 fuel pressure gauge dropped to 0psi - Ford Powerstroke Diesel Forum
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Old 02-14-2012, 09:30 AM
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air dog2 fuel pressure gauge dropped to 0psi

Well i had my AD2 Pump replaced last month and while i was driving yesterday my fuel pressure gauge dropped to 0psi and stayed there. My question is would the truck continue running wile at 0psi or can it just be a gauge issue?? Please let me know if anyone ran into a similar problem. Thanks
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Old 02-14-2012, 09:33 AM
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never had that happen to mine. good luck
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Old 02-14-2012, 09:58 AM
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well listen to the airdog. if it sounds like its runnin out of fuel and surging trying to pick up fuel or not running at all you know what it is. if it sounds like its got plenty of fuel then its prob the gauge. what kind of gauges do you have?
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Old 02-14-2012, 11:28 AM
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Autometer.. truck runs fine and if I had 0 psi at the secondary fuel bowl (where my gauge is hooked up to) I'm pretty sure truck would not run at all.
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Old 02-14-2012, 12:14 PM
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id say call autometer and see if they have a test to check the sensor. i know glowshift has a procedure that they do over the phone with you to check the sensor to see if its bad. thats what i would do first
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Old 02-14-2012, 12:22 PM
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pull the secondary filter cap off and cycle the key see if its filling with fuel.
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Old 02-14-2012, 12:24 PM
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Quote:
Originally Posted by Darektylka View Post
Autometer.. truck runs fine and if I had 0 psi at the secondary fuel bowl (where my gauge is hooked up to) I'm pretty sure truck would not run at all.
the truck will run with 0 psi, It will run longer than you think.

How much fuel was in the tank?
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Old 02-14-2012, 01:44 PM
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Quote:
Originally Posted by 06powerstroke06 View Post
the truck will run with 0 psi, It will run longer than you think.

How much fuel was in the tank?
this is true! i forgot that one time i unplugged my airdog for something and forgot to plug it in and ran all around town and i was wondering why my truck was acting really weird. of course i found the problem quickly but still thats crazy that the injectors can pull it from the tank, though the pump and feed themselves.
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Old 02-14-2012, 01:57 PM
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Unfortunately, there are issues with the Airdogs doing this and are typically related to a bad relay or a connection problem. I would start there, as others have said with no pressure the truck can run for atleast 30 seconds because of fuel in the lines and in the heads post-sensor.
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Old 02-14-2012, 02:54 PM
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Rdunagan, what weird was happening with your truck with airdog not plugged in ?
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