Question about 2001 Honda Civic

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Sloshing/Gurgling type noise behind dash of Honda Civic

I hear a "sloshing" noise behind the dash of my 2001 honda civic. I hear the noise when I accelerate from a stop. I read where it probably is air bubbles trapped in the heater core and tried putting the car on ramps and removing the radiator cap and running engine for awhile. A few bubbles came out but the noise is still there. Could anyone tell me how to get rid of this noise?

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  • 28 Answers

SOURCE: HOW DO I BLEED A COOLING SYSTEM 98 HONDA CIVIC

I believe the previous solution is confusing your AC system with your cooling system. Trapped air in the coolant is unlikely to occur anyway.
Check rubber hoses around the intake. Look for loose clamps or collapsed hoses that can leak air into the intake bypassing the throttle; a vacuum leak.
If OK, locate the engine temperature sensor for the engine control system. (Look in a parts catalog or service manual for the car). It may be defective. I'm assuming from your OP that the Engine light is not staying on. If it does stay on, there may be a trouble code saved in the engine control computer.

Posted on Oct 20, 2008

  • 92 Answers

SOURCE: Water sloshing around Honda Passport

DOOR BOTTOM DRAIN HOLES MAKE SURE NOT PLUGGED

Posted on Oct 08, 2008

5LTRBTR
  • 174 Answers

SOURCE: 1992 Honda Civic over heating

here is a check list for common overheating issues low coolant? Any leaks? A headgasket leak? To test that use a coolant mix tester. Do the cooling fans run with the engine hot? Is the rad cap holding pressure? This can be tested usually its easier to swap it with a working one or buy new. Lastly the waterpump and timing belt. If the timing belt if old/high mileage or the tensioner faulty it can cause overheating. The common practice is to replace the timing belt every 100,000miles along with the waterpump and the belt tensioner

Posted on Dec 28, 2008

  • 356 Answers

SOURCE: What are the steps to

Get a repair manual and don't even go near the
airbags without removing the negative battery
cable.

Posted on Feb 12, 2011

  • 691 Answers

SOURCE: We have a 2005 civic

Could be the drain tube is partially clogged. It is usually located on the fire-wall or down towards the floor pan under the car. It is usually close to where the A/C lines go thru the fire-wall. About 1/2 inch diameter sticking straight out but may have a 90 degree elbow pointing down.
Also, it's been extra hot and humid all over and moisture could be freezing inside the unit when on MAX A/C, then suddenly melting when switched to normal. This opens the outside air door and allows warm/hot air into the unit instead of recirculating the cold air inside the car. The drain may not be able to handle a large, sudden quantity of water.
Perform a "driveway" test. Open the hood, start engine and run the A/C on normal with the windows or doors open. Locate the drain tube by looking for water dripping. Once located twist 2 or 3 pipe cleaners together and verify the tube is clean. Then close the doors/windows and switch to MAX A/C. Check for water dripping. If it stops dripping, water is freezing inside and now you know why!

Posted on Aug 28, 2011

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That is an interesting question. I experienced this once with a 1995 Taurus and it would sound like the ocean behind the dash on turns. It was a leaking radiator that caused air to get in the system as it leaked. I have also seen the drain plugs clogged for the air box during the summer that collected water due to condensation from the evaporator.

Check the coolant reservoir to see if it is at the correct level and also make sure the air box drain(s) is clear of debris. Although, if the air box is that full with liquid, it usually starts to poor out on the passenger floor so that would give you a better idea of what is happening if that is the case. I hope this gives you some Ideas of how to approach the problem.

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There is probably a worn arm on one of the flaps inside the heater box. The noise you hear will be one of the motors turning and wearing away one of the flaps, dash out job im afraid.

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