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Oldsmobile Forum: odd coolant leak
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Old December 4th, 2017
dave11351 dave11351 is offline
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odd coolant leak

I have a coolant leak where I've never seen one before. It is at the firewall where 2 air conditioning lines are. 2.5L engine on a 1990 Calais. 1 line goes back to the radiator and 1 goes to the evaporator ( I believe that's what it's called ). There is a 90 degree elbow below one of the lines which I'm guessing is a drain. It is a big leak. It will drain the reservoir in about 1 min. My mom said it was smoking when she came back from church but I believe that was steam. The heater hoses are above and to the right of the leak almost exactly in the center of the firewall and seem to be fine. I can't find any other leaks anywhere and the carpet on passenger side seems to be dry. No antifreeze odor in the car either. Since it doesn't have a radiator cap I can't tell if it is dry or not. Could it be the heater core? I am stumped please help.
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