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Old 04-16-2012, 09:10 PM   #1
Join Date: Apr 2012
Posts: 46
Air horns don't operate

I can hear air flowing but no honk. Fuse in the left front compartment is good. 2005 Allure

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Old 04-16-2012, 11:01 PM   #2
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Location: Bakersfield, Ca. U.S.A.
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If your air horns are open faced you may have a plug inside the horn its self. Check to see if your air lines are leaking using a little detergent and water in a spray bottle at all joints and anywhere the line may have rubbed against some thing. Some one will have to hold the horn button down once you get on the horn side of the solenoid valve, while checking for leaks. It takes pressure and volume to make them work One more thing, see if the valve to the horn solenoid is wide open. Hope this helps.


99 F-350 4X4 PSD pulling a 24' Nash travel trailer
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Old 04-16-2012, 11:27 PM   #3
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On ours I have a switch on the dash to select the electric horn (pretty weak) or both the air and electric (much better).
But if you're hearing the air flowing that can't be the problem. I would be looking for low air flow/pressure to the horns as said above.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
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