Coolant leak on the passenger side firewall side of the engine. I could only find signs of leaking at the top of this small hose. I was able to change the hose but still leaking. See details
I am positive the problem is the housing that the top of the small u shaped hose goes into. Does anyone know what the housing is called and how to access it? Evan with a mirror from top and bottom I cant get a good look at it. From what I have found online a lot of people have removed the intake manifold just to change the hose that I already changed out. Does anyone know if this housing can be accessed without removing the intake manifold? Any information would be greatly appreciated PLEASE HELP! 1999 Nissan altima gxe
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Re: coolant leak on the passenger side firewall side of...
If it is a GM engine and car, that sounds like the bypass hose. Is it on the actual front of the engine, which is on the passenger side? The u-shaped hose may connect to a plastic elbow that screws into the front of the block, below the intake manifold. I don't think you need to remove the intake to replace it, just get everything out of the way to work on it. On some years, rather than a threaded fitting, there may be a fitting with an O-ring for sealing.
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Was the coolant old and weak? At ten degrees, a weak coolant could result in freezing and that can cause an engine freeze plug to burst open. Check the side of the engine block for signs of leakage around the freeze plugs. Another possibility is the heater hoses. They run along the passenger side of the engine as well. The last possibility is the heater core. If it leaks you may smell coolant inside the passenger compartment. You MAY get a wet floorboard on the passenger side. Coolant leaking from the core usually will fall into the condensation pan for the A/C and run out of the passenger compartment thru the firewall on the passengers side.
Obisouvly a leak somewhere.Would start with upper and lower radiator hoses with vehicle running and at normal operating temp.This will allow the cooling system to build pressure,look for signs of wetness at hoses as well as heater core hoses from water pump to usually the firewall where they go into the passenger compartment to the heater core.
It sounds like you're looking at the heater core water lines. These connect to the heater core supply and return inlet and outlet pipes to bring hot coolant into the cabin for heat and windshield deicing.
The heater core is a mini radiator and operates on the exact same principles as the radiator does. The heater core is located behind the dash board on the passenger side. Look for a wet spot of antifreeze on the passenger side floor area - close to the firewall for an indication of a leaky heater core. If it is leaking, it will likely need to be replaced. This can be a pricey repair.
that is where your heater core is. Its leaking, or the feed hose to the heater core is leaking. You really need to pull the plastic cover off, just below the dash on the passenger side to look. the heater core looks like a small radiator. If coolant is leaking out of it, replace it. the coolant will cause problems in the long run, if you don't fix it now. After fixing it, steam clean the passenger side of the suv, to stop having a smell, and stop the corrosion. hope this helps
The AC condensation drain tube is also located on the passenger side fire-wall towards the bottom of the fire-wall, it is there to drain the condensation from the evaporator/core plenum so that it does not flood the passenger compartment floorboard with water and it can easily be viewed from under the vehicle, and if it is cool clear water that is leaking and not hot coolant then you have no problem and that is a normal condition when the AC is operating.
If it was a coolant leak the cooling system would be low on coolant, and the engine would run hot when the coolant gets low.
look at the firewall on the engine side and you will see a small stub hose coming out on passenger side about even with the bottom of the heater box inside. that hose drains condensation from the ac...clear it out and you will have a dry floor. (unless heater core is leaking but you didn't mention any overheat or coolant loss so likely that's not a problem)
Most likely a leaky gasket. The water pump is a likely candidate, but also could be from a bad radiator hose/thermostat connection. Would suggest washing down the engine with a hose connected to the hot water. While the engine is cold use the hose to wash off the oil & grease deposits and old antifreeze. Allow the engine to dry without running the car. Once dry start the car and be prepared to look for the first sign of a leak. Sounds like a dealer issue since there is very little work clearence between the front of the engine and the car body. Barely enough room to be able to change the serpentine belt.