The A/C on our 2007 Nissan Altima went a year ago. Our trusty mechanic diagnosed the problem and replaced the clutch, which is now past the one-year warranty. The A/C has now became intermittent, and the mechanic’s best assessment is that the recent clutch has also failed, but he has no clue about an underlying cause, if any. His recommendation to get the A/C running again is to replace the clutch again, assuming that it is the source of the problem. He advises that this is the only way to determine if it is in fact the cause or something else highly obscure is behind the clutch failure.
What should we do about the A/C and clutch?