E34 Heater Core Leak?

[BMWben]

My car has been losing coolant since I've gotten it. At first there was a crack in a tube going from the reservoir to the radiator but I fixed that up. Then I kept getting losing coolant after that but I didn't see anything dripping so I assumed it was a leaking head gasket. Now the dripping is back and it is coming from the back of the engine block, it is dripping on to the down pipe of the exhaust and around that general area. I'm thinking it is the heater core or maybe some tubes going to the heater core. Anyone have any ideas? If I do need to get a new heater core, are they all $150 or does someone know where you can get a better priced one. Thanks!

[B C]

Trade me cars. That is all

[Earl]

They're all that price. Mine leaks but not enough to lower the coolant level since I bought it and no noticable leaks other than the scent when the heat is on.

[I love my E39]

Im having the same issue but mine is leaking by the front somewhere but not enough to get engine hot but is leaking badly once reaches optimal temp and i replaced my upper rad hose.. sorry for thread jacking

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[tsweers89]

Back of the engine on a v8, most likely a valley pan which is under the intake manifold. e34's are known to have bad heater cores but that would be leaking inside the car. Otherwise there are some 2 coolant hoses that go to the heater core in the engine bay. Id inspect the valley pan and go from there. If no leak is visually seen there then pressure test the system and inspect.

[BMWben]

tsweers89 said:

Back of the engine on a v8, most likely a valley pan which is under the intake manifold. e34's are known to have bad heater cores but that would be leaking inside the car. Otherwise there are some 2 coolant hoses that go to the heater core in the engine bay. Id inspect the valley pan and go from there. If no leak is visually seen there then pressure test the system and inspect.

Are you talking about #5 in the diagram?