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Re: unknown water leak
Try starting the car up and and let it get p to operating temperature, using a rag or a pair of gloves try flexing, bending the radiator hoses and the heater hoses to see if any water or coolant is spraying out, you may have a pin hole in a hose that expands only when the car is hot. If not then you will need to have your system pressure tested. Good luck and I hope that you take the time to rate this site.
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May not be heater core, sounds like leaking water into car from some other source.Low coolant could be engine gasket related Check for coolant leaks in engine compartment & under car.
Also check for water leak at winshield before replacing heater core.
sound like a bad heater core! the heater core is like a small radiator that is usually locaded in the dashboard on the passenger side. now if the leaking is really bad you are going to see water dripping by the front passenger tire or if it gets really bad it may leak inside the car. in order to fix this problem the HEATER CORE must be replaced. good luck
The heater core would be the suspect in this case as the only sources of water in that area are the heater core and AC evaporator. May only be leaking under high heat and presure, the new thermostat may have helped this for a while but if the pressure is too great and there is a hole then the water will find it. Could also be a hose dripping inside the firewall for the heater core.
Your heater core has developed a leak - the wetness on the passenger side carpet is engine coolant from a heater core leak, or a leak in one of the two hoses connected to the back of the heater core. Your strategy: disassemble dash down to heater core, determine whether you'll need a new heater core or new hose (or new hose clamp), then replace the offending part.
Could be the heater core, or where your heater hoses connect at the firewall. Heater core leak would more than likely put steam in the vents of you car when heater is on and hot and fan on. If the leak is just in the engine compartment, it`s a hose or a loose connection.
Don't use stop leak, use regular kitchen black pepper. About 2 tea spoon should stop the leak soon as the pepper makes it way to where the leak is. Black pepper will clean up after you flush the coolant system and will not leave any residue like the stop leak that will restrict the coolant journals and water jackets in the engine block and radiator.
Removed the center console to get to the panel that holds the heater core.the heater core is in the center of the car under
the radio. There are 7 screws holding the cover on. Once you remove the
7 screws, there are two straps that hold the core inthe heater box (2 screws per strap. Some cars are easier to get the heater
hoses from underneath after jacking up the car, some you can get to
from up top under the hood behind the engine. It's not a 15 minute job,
but not difficult at all. I usually suggest pulling out the passenger
side seat to give a comfy place to lay while doing it. the seat comes
out with only four bolts, and you won't have to contort your self to
get the heater core out. Your low coolant light is due to air trapped in
the system. Anytime you open the cooling system on a 3.1, you have to
bleed the air out using the bleed valves on the t-stat housing and
transfer tube (some only have one on the t-stat housing. If you have a 5 speed, your going to remove the shifter
knob and just yank on the plastic that had the boot. (it only has snaps
that hold it on) Then there are 2 bolt holes in the armrest
compartment. and 4 more which are under the boot and plastic. Very easy
to take off and put on.
Good luck, and other way is to by pass the heater core at the heart hose, but your not going to have any heat.
Just had ours fixed, look on engine side of firewall, if the outlet pipe in passenger well is a 3/4 inch long pipe projecting forward into engine bay with no tubing leading down towards the ground, the problem is water comes out trickles back with pressure in engine bay to foam seal under the pipe and enters footwell inside car.
Take a piece of rubber tubing and hose clamp it on and direct it down towards ground in engine bay and the problem will be solved!
We have gone from soaking carpet to no leak at all with this simple fix.
If your smelling coolant in cab, and window fogging up, check fog if green heater core is going. Over heating could be a couple of things, plugged radiator, water pump, thermostat. To check for water pump Find the top hose, run car check for leaks on ground. While warm or hot wear glove oven mitt or something that you can feel through but will protect from heat, If you feel flow of coolant more the just a trickle its a good thing to replace thermostat. Also check for bubbles in the coolant tank, if there are bubbles your S.O.L. the head gasket is blown