SC- 1st Gen (1992-2000)

Strange water sloshing sound coming from dash/engine wall -guesses ?

Old 08-28-09, 07:23 AM
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Lexicon1
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Default Strange water sloshing sound coming from dash/engine wall -guesses ?

Hi
Ive searched under sloshing sound ,and water sound, and no luck.
SC400 1997
If I pull away slowly, I can hear what appears to be water sloshing in a container from the dash area , perhaps somewhere on the engine wall.
It sounds like you have a gallon container and "sloshing water" from one end to another.
Any guesses..... Its not coming from the trunk area.
One guess is water trapped that should drain after washing the car...perhaps under the windshield wipers area...
Will need to check this weekend and remove the black screen area in the engine compartment....
Any of you had this previous experience ?
Thanks in advance
Old 08-28-09, 07:30 AM
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matttai
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edit: **** nvm just remembered my issue is water trickling sound when aircon is turned on. anyway leaving what i wrote in case it's relevant.

had a similar prob in another car of mine. sounds like water trickling from the center console area?

hope to god it's not your heater core on its way out. else it could be air bubbles in your cooling/heating system which calls for a complete coolant drain and flush.
Old 08-28-09, 09:46 AM
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Papajorgio
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i have a 300, but does it sound like the water pump circulating coolant through your heater core, ive always thought it was normal because as long as ive owned my car ive heard that noise,
Old 08-28-09, 09:49 AM
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Iocca
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I had this happen to me in my 06 gs300 twice now, both times, after it rained. but it was very strange, ive never heard it in any car before.
Old 08-28-09, 10:32 AM
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Dirty SC
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i might have the same issue but i never actually hear the water sloshing. everytime it rains hard, i go for drive right after, my windshield wipers turn on by them selfs with the switch being off.. it only happends once i start driving, this only happends if it rains really hard or if it rains all day. has this happend to anybody here?
Old 08-28-09, 12:16 PM
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SC_coupe
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I get the same sound on occasion.
Old 08-28-09, 03:03 PM
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SC300Star
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One of my cars (a Mitsubishi Starion) does this when the condensate drain hose is clogged. The water backs up and the fan kicks it around - sounds pretty weird until you figure it out and rotorooter the clog...
Old 08-28-09, 03:09 PM
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it may be air in your heater core, you need to fill coolant in your radiator...my guess
Old 08-28-09, 05:29 PM
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RyanV
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Originally Posted by SC300Star
One of my cars (a Mitsubishi Starion) does this when the condensate drain hose is clogged. The water backs up and the fan kicks it around - sounds pretty weird until you figure it out and rotorooter the clog...
Yep, I need to do this too +1 for the Starion..I miss mine..
Old 08-28-09, 08:01 PM
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As mentioned above - A/C water drain is clogged & the A/C-heater box is
full of water. The drain hose is on the passenger side firewall 6/8" up
from the floor. Use a long fat zip tie to rotorouter the hose.
Old 08-28-09, 09:14 PM
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i only got that noise after i took out the tstat.
Old 08-29-09, 12:47 AM
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SC_coupe
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As mentioned above - A/C water drain is clogged & the A/C-heater box is
full of water. The drain hose is on the passenger side firewall 6/8" up
from the floor. Use a long fat zip tie to rotorouter the hose.
Make sense. This has been intermittent all year, but coilovers took priority over getting the A/C working again in my case.
Old 08-29-09, 02:33 PM
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Lexicon1
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Default Blue out the A/C drain at around 90 psi....

Gents
Thanks for the suggestions, blew out the drain, expecting water to come draining down..... nothing, turned on the A/C and its producing a relatively normal amount of drainage based on our weather.... just went out for a spin.... still got the sloshing sound......
I do have a slight weepage of my radiator hose and....thats the next project to replace all coolant hoses on the SC400,
perhaps its air in my radiator and air bubbles in the heater core as mentioned previously....my coolant tank is at the appropriate height.
any other suggestions welcome.
Thanks Guys,
Old 08-29-09, 02:48 PM
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RyanV
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Where does water drain if it gets through the mesh and into the AC fresh air intakes right below the windshield?
Old 08-29-09, 09:46 PM
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Originally Posted by Lexicon1
Gents
Thanks for the suggestions, blew out the drain, expecting water to come draining down..... nothing, turned on the A/C and its producing a relatively normal amount of drainage based on our weather.... just went out for a spin.... still got the sloshing sound......
I do have a slight weepage of my radiator hose and....thats the next project to replace all coolant hoses on the SC400,
perhaps its air in my radiator and air bubbles in the heater core as mentioned previously....my coolant tank is at the appropriate height.
any other suggestions welcome.
Thanks Guys,
OK, the sound is air trapped in the heater core/ heater hoses. The heater
control valve is higher than the radiator fill. You can buy a coolant fill bucket
that mounts to the radiator to bleed the air out. Or fully warm the engine w/
heater on hold the engine @ 2,000 RPM, top off the radiator, then cap it.
That will force the trapped air back to the recovery bottle. The bucket is
easier & costs 20.00.

Originally Posted by RyanV
Where does water drain if it gets through the mesh and into the AC fresh air intakes right below the windshield?
Out the water drain coming out of the firewall.

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