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Q: airconditioning on 2000 Mercury Sable

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the electronic air control system will not allow me to turn off heat the system shows max a/c 60degrees and the compressor is running with the right pressures all I get out of vents is extreme heat any help bing
(1) Answer
These electronically controlled systems can be affected by a mechanical or an electrical failure, and it really takes a trained technician to be able to address this. It can be something like a broken blend air door or a faulty temperature sensor, but determining that is the real difficult part.