I Do not know what the part im trying to fix is called
Well my Wife's volvo sprung a coolant leak from a black plastic something that looks like a plastic door knob and it is located behind the engine and i don't know what the part is called would you please help me... its hard to get help when you have know clue what your doing...
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at the firewall engine bay side behind the black plastic covers are the heater radiator connections the rubber o rings start to perish and becomes the source of water loss the water runs down the firewall on top of the exhaust heatshields that why its difficult to spot it
When the motor heats up it is expanding thus stopping the leak. You need to have it checked by someone or put in some radiator dye from your local auto parts store and use a black light to determine where the leak is. Is is not hard to warp a hot engine lacking coolant and then we are talking major work to fix it. You could use some radiator stop leak found at your local auto part store such as a product called BARS LEAK which could cure the problem or make it worse by plugging the flow of coolant.You really need to know where the leak is at and get it fixed.
underneath the front of your car, there is a big plastic tube going into a radiator looking thing ( not the coolant radiator) this tubing is for ur turbo. ull notice similar tubing on the top. one plastic tube at a time go around and look for any cracks u might see but the big problem usually lies where the tubes connect via hose clamps and rubber sleeves. especially the tube going into the cooler under the front of the car. look carefully and get underneath there. takes any plastics off to see. im tellin u if one of those tubes lets outside air in it will cause issues, its called unmetered air that doesnt cross the path of the maf sensor. look around very well ive seen many of these with the same systems. grab the tubes and move them around.
your coolant temp sensor wiring is touching ground. im assuming you have a few oil oil leaks. oil and heat on wiring insulation dont mix. find this wire and make sure it is not touching any brackets or the engine block. this doesnt sound like a hard issue. i think youll find something pretty easy.
That drain line is for the box that holds the air conditioner evaporator and the heater coil. It seems that your heater coil has sprung a leak and the leaked fluid is coming out the drain. You have to replace the heater coil, which on most cars involves removing a lot of the interior equipment, including the dash board on many cars. A job best left for the repair shop unless you're very adventurous and patient. Even then you will have to take it to a shop to have the air conditioning system recharged.
Refill the coolant reservoir (with water might be best and cheapest). If it continues to leak rapidly onto the front carpets, then your leak may be in the heater core. Call a local Volvo parts dealer and they should have one (there is also a small assembly part that may or may not be important). This should run you between $200 and $300 for parts alone.
If you are going to DIY, be careful - my mechanic jogged loose a small component when fixing this issue several months ago, and I now have no A/C on my driver's side (it's always on Hot).
try to look under the carpet driver&passenger side,if is dry heater core is ok.radiator cap you dont have one but you have acoolant reservior where you fill up the coolant its on right side big plastic with a cap its screw type.best thing to do is preasurize your cooling system