Thanks for all the replies. The mechanic who did the job is not shady, he is a friend of mine. He mostly works on big trucks but he gives me a really good deal on labor so I use him. I probably explained his initial charge procedure incorrectly. He did claim that the next day the compressor started right up and it has worked perfectly ever since. He told me he thinks the sensor needed to acclimate over night. I think he was to embarrassed to admit the ec button was on
