2002 Honda Civic LX
Maybe a year ago I started having problems with air conditioning. The hot air part works fine, no problem whatsoever. But the cold air thing doesn’t work as it used to. It’s not the fan - the fan blows enough air for a little storm, it’s just not cold enough.
First time I noticed, it just stopped making cold air for maybe 15 minutes. Air was coming in at ambient temperature, not even a degree cooler than that. Then it started working again. Ever since then I’ve had intermittent failures like this, and then it would start working again. It’s not a change in flow, it’s a change in temperature.
Second symptom - even when it does work, it seems inconstant. Before, I could just set it and forget. Now sometimes it seems more fidgety, and I have to keep turning the button when it starts acting up.
Third symptom - it doesn’t seem to make any cold air at all when the engine is idle. The engine must run at normal cruise speed to get any cold air out of it. Before, it was slow to make cold air when idle, I had to wait a while, but eventually it would start to make cold air. Nowadays, if I’m coasting downhill, there’s no cold air at all.
I’m worried that one day it will stop working altogether. Plus, it’s not fun when it’s hot outside and this thing decides to take a vacation. I didn’t care about it in winter, because the hot air works fine, but now that summer is knocking at the door, this is suddenly a problem.
What might have gone wrong? Is it something that’s easy to fix at home, or should I take it to the mechanic?