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Hear water or coolant behind dash

Hear water or coolant coming from dash area when moving from a dead stop

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  • Chevrolet Master
  • 2,620 Answers

You have a leaking heater core.

Posted on Nov 01, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: Water sounds under hood when you first accelerate

Thank you for allowing me to assist you with your issue.

Since you have described that there was a buildup of leaves under your hood, my experience here indicates that the "cowl drains" are also plugged up with debris. The "cowl" is where the air enters the heater box intake (this is the area under the hood, in front of the windshield, with a black screen-looking thingy under the wipers). Since air has to get in here, water & debris can also get in. There are drain areas on both sides of the cowl (in the corners) to eliminate water from building up in the cowl area. Try this: Take a bucket of water, and dump it under the windshield area where the screen is on the cowl panel. Look behind each of the front tires for water draining onto the ground. You should see a very steady stream of water on both sides. If not, you may have to take a garden hose & spray vigorously until the debris is carried thru. You could also take off the wipers and the plastic cowl panel for easier access to the corners where the drains are blocked. In any case, a large volume of water will usually make its way thru the blockage. This will cure your issue. Please repost if you have any further questions, or need additional assistance; glad to be of service to you.

Posted on Oct 14, 2008

erietrack
  • 37 Answers

SOURCE: 2000 Buick Lesabre

If you smell antifreeze in the vents, you have a bad heater core. If not, it a sign that the coolant system is either low on antifreeze or has a blocked coolant vent passage.

Posted on Nov 08, 2008

  • 2 Answers

SOURCE: Hearing water behind glove box

my brother is a machanic my truck does the same thing its nothing to worry about its just water going through the lines for your heater

Posted on Jan 07, 2009

wracefans24
  • 1985 Answers

SOURCE: I hear "running water" sound behind the dash of my pickup

you need to look down the air fins,where the wipers are coming thru,it sounds like the drain hole is blocked

Posted on Dec 10, 2009

agent91
  • 2100 Answers

SOURCE: Sounds like water running in the dash area when I accelerate.

I have the same thing on my rodeo, I thought it was just dripping through the heater core, I don't have any leaks, I know it's not the water pump. Mine only makes the sound when I shut it off. Yours might be the ac drain, If it's clogged, it will collect water, eventually it will drip on the floor. There is a drain plug on the fire wall, sometimes gets clogged with dirt, mud, bugs, undercoating, whatever. Check it out.

Posted on Feb 21, 2010

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1 Answer

Water sound in dash


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it is safe, the A/C drain is plugged, if you open the hood and look at the passenger side of the firewall just below were the A/C lines go threw the fire wall you will see a small rubber boot pull the boot off the nipple and use a small wire to clean out the nipple i have even used a tooth pick to clear the blockage, most likely you have a leaf or a-corn blocking the passage, stop parking under the trees, the air inlet for this car is at the back of the hood and junk gets into the heater/A/C box threw this air inlet.

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Hear a gurgaling noise from the lower front passenger area when I first start moving forward


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2005 Kia Sorento gurgling noise behind dash


Check the water coolant level because some of the hot water goes into the heater radiator behind the dash. Seems you have air in the system.

Mar 30, 2009 | 2005 Kia Sorento

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2000 Buick Lesabre


If you smell antifreeze in the vents, you have a bad heater core. If not, it a sign that the coolant system is either low on antifreeze or has a blocked coolant vent passage.

Nov 08, 2008 | 2000 Buick LeSabre

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Liquid noises coming from the dash board


heated water goes to your heater core under your dash..though you shouldnt be hearing it usually..be sure water level is up at radiator overflow reservoir and pay attention in cabin of any sweet smell of coolant indicating a failing /leaking heater core....look for damp carpet on passenger front area if suspicious

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Hearing water behind glove box


Check for a drain tube under hood - up by firewall - see if it is plugged with leaves and stuff

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