Dusty Katz Posted October 31, 2021 Share Posted October 31, 2021 What makes the water sound behind dash as I drive? 0 Quote Link to comment Share on other sites More sharing options...
bbf2530 Posted October 31, 2021 Share Posted October 31, 2021 14 hours ago, Dusty Katz said: What makes the water sound behind dash as I drive? Hi Dusty. It is often caused by a little air in the system. When the vehicle has sat unused overnight, and the engine is cold, try filling the coolant reservoir about an inch above the "Cold Fill" line (with the proper specification and mix of antifreeze/coolant and water.). Drive a few days, and if necessary, check again. If necessary, refill to an inch above again, drive, check etc., until it no longer seems to be dropping. This sometimes helps to alleviate the situation. Let us know how you make out and good luck. 0 Quote Link to comment Share on other sites More sharing options...
drolds1 Posted November 1, 2021 Share Posted November 1, 2021 Good advice above. Another possible cause is a clogged A/C drain line, which can cause water from the evaporator to back up into the car. Is it warm enough in your area to still be using the A/C? If no water has entered the cabin, this is less likely, though. 0 Quote Link to comment Share on other sites More sharing options...
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