I'd be willing to bet it's a compressor related problem. Did it sound like a belt squeal? The poor cooling could be due to low refridgerant. The squeal and smoke may be coincidental. Very likely they're related though. See any visible damage under the hood?

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1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

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