I have anti-freeze dripping on my passengers side floor board. Is it most likely to be a hose or a heater core? How in the world do you get to it? I have taken out the old radio and tape deck and some of the under dash on passengers side but I still can't reach it. Any help would be much appreciated.
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Re: Heater core and heater hoses
Beig there, done that.
most likely is not the heater itself. most of the leak is from the water **** (heater control valve) located at the passager side of the heater. if you need instruction e-mail me at email@example.com, I have all the instruction and diagrams for the thing.
THe heater core is a bear to get to. You have to practically remove the entire dash to get it out. A cheap way to try and remdy the problem is to use Alumaseal. Alumaseal can slow or end the leak but it is temporary. If you remove the heater hoses and bypass like the previous answer you lose the ability to have heat in the car and you mess up the cooling system. Don't bypass. IF you are mechanically able I would try and do it myself. I have done them. Figure a day worth of labor to do the work. Lots of screws wires and ****. Once the core is out you may be able to have it fixed at a local radiator shop. Otherwise go to local supplier and buy a new one. Take your old one with you to verify correct one. Look for part at a local radiator supplier. Good luck.
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Are you sure it needs to be replaced and not reversed flushed?
To reverse flush the heater core there are 2 hoses next to each other that go from the engine through the firewall disconnect them and with a garden hose run water through the nipples they where hooked up to.
Most heater cores don't need to be replaced unless you see water/anti-freeze on the passenger side floor mat.
What makes you think its the Heater Core? I just did mine in a 1995 Town car, took 7 hrs with union breaks (lol) You have to take the instrument panel away from the firewall, once that is done it takes 10 minutes to change the heater core. Does your windshield fog up? Do you see anti freeze on the passenger side floor? Do you smell anti freeze? Take the 2 hoses off the heater core, look to see if its clogged, if its clogged, put your garden hose on the inlet of the heater core and let it flush.
P.S The shops will tell you they need to e vac your AC NOT TRUE! they want to get you for another 3 hrs.
there is only so many things that can cause this and are you sure its anti-freeze and not washer fluid.just something else.a damaged heater core is usually what causes a leak inside the car.when the heater cores were replaced did the shop say there were signs of them leaking or couldn`t see anything.the other is coolant from a previous leak could have spray aroung the air ducting in the dash and has finally found a way out.but this should have been gone shortly afterwards and usually there is only a mist that is sprayed into the air ducts which usually shows up on the inside of the windows,so i don`t think this is the problem.if the hose clamps are loose were the hoses are fastened to the heater core spigots/tubes it could be leaking inside the cars air duct.and yes its unusall for anti-freeze to leak onto the drivers floor but stranger things have happened.
You can only have 2 issues dripping water onto the passenger floor board. First being a clogged drip line for the ac evaporator. The other is a leaking heater core. Figuring out which one is the issue is fairly easy.
If your vehicle has anti freeze in it when you turn the defrosters on it will smell sweet. If it does you have a leaking heater core. If it does not then the drip line is clogged.
To clear the drip line get under the vehicle and snake the drip line on the firewall. It usually is a 90 degree rubber or plastic piece on the passenger side about a third of the way up the firewall. A leaking heater core means it has to be replaced and not really a job for someone that is not exsperienced.
Well if the leak was starting from inside the car and dripping out the floor pan area, it is most definately a leaking heater core which is nothing more then a small radiator, however it is buried under the r/s dash behind the glove box and requires a bit of experience to R&R it properly, to be certain the core is at fault check the carpet on the pass side and see if it is wet under the dash area, if so it is the core if not you may have a rotted heater core hose or hoses, they(two of them) are the rubber hoses that sort of go from the pass. side of the engine through the passenger side firewall to meet up with the heater core supply nipples, they are both clamped on each end for secure fit, be sure before you do any work on the system that you let it sit and cool down as to avoid getting scolded by hot water/anti freeze, the two heater core hoses are distictly two different sizes one is 3/4" in diameter and the other is 5/8", both available at any parts store, dont forget to top off the anti freeze that leaked out using a 50/50 water to coolant mix.
After the repair is made and system is topped off....run the vehicle for about 1/2 hour and recheck for any possible further leaks, fix and repair as needed.
Leaking inside on the passenger side floor could be the heater core(you should smell anti freeze) or the a/c condenser drain hose where the water collected on the condenser goes is stopped up. It's supposed to drip under the car. You may can unstop the hose by blowing through it from under the car if you can find it. If that doesn't work you have to access it from inside the car under the dash. The same goes for the heater core.
I am not sure what A/c is but I will say you have coolant(anti-freeze) leaking.
You either have a loose hose on your heater core or your heater core is bad.
You will have to disassemble the unit under the passenger side dash to find out.
Please let me know what you find.
Firsdt check the radiator cap thats it tight , then check for any anti freeze visible on the engine, then check under the car for any leaks. Is the smell of anti freeze inside the car ? , check the heater core you may have a leak there. the newer heater cores are aluminum and certain anti freezes, are extra acidic , which causes the anti freeze to eat at the heater core causing leaks, it maybe be a pin hole leak in the heater core ,causing the smell.