In an Impreza Outback Sport '05, I have noted that after accelerating when I let off the gas, the A/C would appear to cycle off for a few seconds.
I don't usually notice this on low fan speeds (presumably b.c. it doesn't blow the cold air out fast enough), but do on high fan speeds.
I am not talking hard accelerations either (though, hard accels make no difference). So, while accelerating, the air is perfectly cool. Most of the time, if I then let off the gas slightly, or a lot, the air coming out of the vents goes warm for a seconds as if the A/C had cycled off.
Normal? Not normal? If not, then what could this be a symptom of being wrong?
If this is normal, I'd still like to understand what's going on under the hood.
Thanks!