The A/C compressor went out on my '05 Sienna.
I replaced the compressor but not the receiver/dryer and expansion valve.
Now the A/C is sort of working right: It has separate front/back controls. If both front and back is on, it works fine. Blows nice and cold. However, if just front is on, it does not get cold and blows barely below cabin temp air.
My question is: Is this a situation where not fixing it could cause further issues, or is it fine to leave it like this and deal with the minor inconvenience of having to have both the front and back on?