ok...this is not my car, so I can't really give you a lot of information.

When using the AC, after a while there is a coolant leak from the Y pipe mounted on the firewall and feeding the inside of the car.

A/C is not blowing all that cold, but I can't tell if it's cooling at all as it was evening when I was testing.

Here is what I suspect: With a low charge, the AC is freezing up the evaporator core inside. With this freezing up, the coolant is restricted causing back pressure and thus the high pressure leak around the seal.

Anyone think I'm completely nuts, or is this possible.

The problem ONLY occurs when the A/C is used.

The leak is from the bottom side of the Y connector.

Thanks in advance!

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1998 W202 C230 - The money pit of late.
1984 W126 300SD (356,800 miles) Gone to the wrenchapart
1984 W123 300D Gone to the wrenchapart
1972 W108 280SE 3.5 (sold but not forgotten)
1986 Buick Grand National 3.8l Turbo (86k miles)
1966 Glassic Model 'A' Replica http://www.glassicannex.org

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