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Old 05-10-2018, 12:38 PM   #1
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Front area has a pump or motor running

Strange question, I have a 2007 bus QSP on a FL chassis. I hear a motor/fan or something running near the front. The generator is shut off. Bus has been parked, aired down and jacks deployed. A/Cs off.

Any ideas as to what is running?
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Old 05-10-2018, 12:43 PM   #2
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Water pump turned on with the water tank empty? Pump will keep running since it can't build up pressure.
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Old 05-10-2018, 12:46 PM   #3
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Window fan, vent fan...?
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Old 05-10-2018, 12:59 PM   #4
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All fans off, water tank is 1/2, water pump off. dash blower switch off. over head fans off.

Don't know what else to shut off!!
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Old 05-10-2018, 01:19 PM   #5
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Does your generator have a cooling fan and, if so, is it running even though the gen is off?
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Old 05-10-2018, 01:30 PM   #6
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Converter cooling fan??
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Old 05-10-2018, 01:34 PM   #7
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Quote:
Originally Posted by purduepete97 View Post
Converter cooling fan??
x2, or inverter fan.
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Old 05-11-2018, 01:06 AM   #8
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Many diesel coaches use vacuum operated HVAC but no vacuum in a diesel engine so they install a vacuum pump in front. If there is a leak, the pump will keep running.
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Old 05-11-2018, 04:57 AM   #9
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Find 12v on/off switch and turn off 12v and see if that stops sound? Dave
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Old 05-11-2018, 06:44 AM   #10
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Check your fan on your dash air-conditioner make sure it’s off. It will continue to run even with the key off I think mine does
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