5.9L CR Performance Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection Related To Performance And Longevity

air dog quits....turn off key and back on it will come back on?...

  #1  
Old 11-01-2009 | 08:08 PM
veggyoilkid's Avatar
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Default air dog quits....turn off key and back on it will come back on?...

I have several times had my motor die on me while idling. Each time I can hear the air dog pump is not running. It has always happened while idling and in park. It always will start again [ both the pump and the motor ] sometimes the pump does not come on when I turn on the ignition right away. If I turn the key off and on it eventually runs and then I can start the truck and it runs as normal.

Anyone familiar with this?... I changed from a 2 micron filter to a 10 a couple days ago and it quit on me again today....

any suggestions?...
 
  #2  
Old 11-01-2009 | 08:12 PM
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Air? got a fuel pressure gauge?
 
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Old 11-01-2009 | 08:15 PM
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check the fuses, and make sure it has good wiring. the AD does have a lifetime warrenty
 
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Old 11-01-2009 | 09:04 PM
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try moving your power line to airdog to a keyed on source, this isnt the first time ive heard of a airdog quitting while the truck is running !
 
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Old 11-02-2009 | 05:18 AM
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last night I pulled off the water separator and checked it out...seems fine

also took the cover off the pump and checked the gear rotor...seems fine too

I plan to move wiring from battery to another source and see if anything changes...

Any other suggestions?...

Oh yeah, made me think I need to carry a spare fuse, if that thing should blow I'm stranded
 
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Old 11-04-2009 | 07:32 PM
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ran a new power supply from the battery, omitting ECM, via a toggle switch in the cab....It did quit once on me while driving ): weird
has been fine since. And I'm beginning to suspect relay could be the problem. not sure yet
 
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Old 11-04-2009 | 07:35 PM
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Sounds like the relay. Double check for bare wires that might trip the relay.
 
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Old 11-08-2009 | 09:37 PM
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Truck has been running fine, don't know for sure why....
It did quit once after I moves the supply wire to a new source other then ECM
That is what makes no sense. The only issue remains is the air dog motor makes a sort've slight rumbling noise off and on. Not constant, just comes and goes irregularly. I can only guess the brushes or a bearring could be going....
 
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Old 11-09-2009 | 12:29 AM
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You should have a FP guage....
 
  #10  
Old 11-16-2009 | 05:00 PM
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Originally Posted by Buck08
Sounds like the relay.

REPLACE THE RELAY!!! Probably cost you $4 from RadioShack!

 

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