Strange gurgling/pumping/motor noises in my motorhome

[ichudov]

I have a Monaco Windsor 40 PST motorhome.

When the engine is NOT running, and nothing else like water pump is supposedly running, I hear strange gurgling or motor noises.

I recorded this with my cell phone and posted to youtube:

https://www.youtube.com/watch?v=3ZOgrT5lC9Y

Do not listen to the sound that sounds like crumpled paper. Listen for deep sounds like gurgling or motor running.

I know that it is NOT affected by the "whole house" switch next to the exit door.

Any ideas what it may be, it is driving me crazy.

It seems to happen more towards the front of the RV.

[-Gramps-]

Heat pumps can make all kinds of strange sounds.

[Executive45]

Wonder if the OP figured it out..:h:h Why post if no follow up...:h:h:h....Dennis

[PCarnathan]

A second vote for the Aqua Hot system. When we get home and shut down after using the comfort heating system we hear what sounds like water and air going through pipes under the coach.

To be fair, the coach is at the shop undergoing a bunch of nickel-and-dime warranty work, and they're looking at the Aqua Hot system to make certain it's functioning properly.

Pat in Menifee, CA
www.patcarnathan.com

[donfrump]

I have worked on several auxillary 12V air level systems and they do not sound like this noise at all

[BigSkyBob]

wolfe10 wrote:
If you have air leveling (not jacks) it could be the auxiliary compressor. If so, and it is running more than a few minutes every few hours, FIND THE LEAK.

Most of these 12 VDC pumps were not designed to run full time.

Brett is probably close in his response if you have air leveling.

[bluwtr49]

My insta-hot water dispenser in the kitchen makes sounds like that when it's coming up to temp if that's any help. So can electric hot water heaters.

[wolfe10]

If you have air leveling (not jacks) it could be the auxiliary compressor. If so, and it is running more than a few minutes every few hours, FIND THE LEAK.

Most of these 12 VDC pumps were not designed to run full time.

[ichudov]

((sounds like a CD player trying to load a cd))

An odd thought, for sure, but it could be!!! I will check tomorrow!

[donfrump]

ichudov wrote:
The noises continue even a day after the engine was shut off.

and u say with the 12v system shut off

sounds like a CD player trying to load a cd

[ichudov]

The noises continue even a day after the engine was shut off.

[ichudov]

Sorry!!!! I re-set my video to PUBLIC! My bad! Please try to turn your speakers up a little bit.

[donfrump]

dougrainer wrote:
Can it possibly be your Aqua Hot water heater/Furnace system? They have circulation motors that run coolant thru the floor heat radiators AND thru the engine block if you have that switch turned on. The floor radiators also have small blower motors to blow the hot air out. Doug

aqua hot runs engine coolant from block thru boiler and a totally separate boiler fluid from boiler through Motorhome heat exchangers
2 separate systems by different pumps and switches

[Executive45]

Saw you moving the press and Help me catch a thief but the above vid doesn't show up. Off topic but it seems the police could have enhanced the video to pick up the plate number off the SUV....Dennis

[Executive45]

Video is set to private. Change your settings.

Also, does the noise come just AFTER you shut off the engine or does it occur even after the coach has been sitting a day or so? How about after emptying a sink? ...Dennis