I BELIEVE IT'S COMING FROM THE AC. SOMEONE TOLD ME THAT IT COULD BE THE LINES CLOGGED. WHAT LINES? I HAD MY HEATER CORE REPLACED THIS PAST WINTER, COULD THAT HAVE SOMETHING TO DO WITH IT? I HAVE ALSO REPLACED THE THERMOSTAT AND UPPER AND LOWER RADIATOR HOSES.
WHY IS WATER LEAKING ON MY FLOORBOARD? on 2000 Honda Civic
by acobabydoll in Princeton, TX on July 12, 2011
2 answers 4 comments
ANSWER by big01_dram , July 12, 2011
There is a line that drains condensation from your HVAC system. It should be under the dash on the passenger side of the car. This could have come loose. It is possible that the heater core or hoses are leaking still. The core is unlikely since new. Maybe 1 of the heater hoses is loose. if you can figure out if it is just water or coolant, you will know better where to look for the leak.
COMMENT by acobabydoll , July 12, 2011
would this have any affect on the radiator? my car has been running hot too. I thought that I may have a leak in the radiator or the recovery because I keep having to put water in it. so is this problem related or do I have a seperate issue?
COMMENT by big01_dram , July 12, 2011
Yes it is possible. if 1 of the heater hoses is loose and leaking coolant inside. then it is coolant in the floorboard and not water. That is unless you have just straight water in you cooling system. If its not coolant leaking inside then you are possibly leaking it somewhere. this would be why you have to keep adding coolant. There is a tool you might be able to rent called a cooling system pressure tester. When the system is hot the pressure inside increases. Leaks get worse then and harder to find due to the heat. This tool attaches to the radiator or surge tank fill opening. You pump it up to apply pressure. Most leaks will become evident with the added pressure. 1 big benefit to the tool is the engine can be cold making it easier to look for leaks. With the pressure built up on the system start searching for leaks. Start under the dash on the passenger side. Then look under the car see if you can spot anything hitting the ground. Then you know what area to start looking. Oh make sure your system is topped off before you start. If you cant find where it is coming from, it may be time to seek more help. The pressure test is not hard to perform. The repair is going to be a bit more tricky. I dont know your level of automotive knowledge. Maybe this is a big task for you or not. if you decide to tackle it I can help more. Im more trying to give you an idea of what tasks lay ahead of you. Another thinng I want to mention is about adding water to the system. Make sure you use coolant witht the water. maybe your are but you only mentioned water. A mix off half water half coolant is what you usually want. The coolant has a lubricant in it for your water pump. it is a good idea to make sure you use coolant.
COMMENT by wshekoni , August 19, 2014
it is plain water under the dash board
COMMENT by Bigdram , August 19, 2014
Either u have solid water in ur cooling system our have an exterior leak somewhere
ANSWER by hellaoldcivic , April 19, 2016
The air conditioner housing has a plastic piece that connects to a hose, and this hose drains out the water that builds up (while drawing moisture from the air) out onto the ground. Unfortunately, this plastic piece cracks and breaks over time, making it impossible to reattach the hose, unless the whole housing is replaced. Mine has this issue. You have to use a bucket and pull back the carpet until this is replaced.