Question about 1992 Buick Park Avenue

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I have steam coming out my vents and it smell sweet

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Your heater matrix has a hole/leak in it. The sweet smell is your coolant boiling off.

As its connected to the engine cooling system, look for any coolant leaks in the engine bay.

If you can't find any and its just a small hole you could try putting some "Radweld" in your expansion tank, maybe a couple of applications. If that doesn't work it'll need stripping down and repairing.

But you must keep an eye on your coolant, its going down, too low and your engine will overheat and seize up.

Posted on Apr 06, 2011


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