Automotive Air Conditioning Information Forum

I put this off for awhile had other projects as time passed the vent temps best they could do was about 60F when it was 115F outside. Compared to our 2017 Ford Focus ST I can get 40F air with a probe in the vent after 2-3 minutes even in 115F outside temp Honda AC should do just as good. I recovered and removed the compressor between both about 4oz of oil came out 2 during recovery and only 2 oz in the compressor. Turning the compressor over by hand feels okay no metal in the fluid. I could smell the citrus smell from the flush. I filled and drained the compressor a few times with some pag46 and drained then added 4 oz of new oil same as I got out of the system. Right now it's being vacuumed overnight.

As far as flush I won't ever use that stuff again IMO it evaporates way too slow I like the acetone idea it should vaporize quickly in a vacuum. While I made an error by not vacuuming both low and high side still I've never had this problem before. I typically never use flush because I usually replace everything. This is the first vehicle I have had with a rear evaporator. I have found most of the time best to replace everything always had better results. Maybe I spray some down the hoses on the bench. I flush a evaporator on a bench blast some compressed air though also. This system the liquid line going to the rear AC is a small 1/4 line makes lot of bends under the car up into the engine compartment into a Tee with the liquid line from front evaporator. Lot of low spots under the car could have gotten trapped in.


The drier just a Desiccant Bag I suppose I could get one of those tomorrow goes inside the condenser replace that if you think it will make a big difference.

Low sagging hoses present a problem to flushing, they s/b removed from the car to do so.I am not in favor of acetone since it is a polar molecule and may not grab the oil based residues from the system. The flush found in automotive stores is pretty bad imo.Tim the board sponsor here at ackits.com has a good flush. I have also seen brake cleaner used (with a side tapping tool you can power flush with the can upside down and avoid the straw), as well as naphtha.
You *always vac from both sides, always. And if you lack a vac gauge then vac for 90 min minimum

I think I meant Naphtha not acetone I know someone mentioned Naphtha before here I will keep that in mind, or use what Tim has. After I vacuumed overnight I had a leak Oring got pinched somehow where low side plugs into the compressor. I was dumb didn't replace the orings when I pulled it 2 nights ago. My leak detector found the link quickly and I replaced both orings. Little oil came out of the hose still had that citrus smell but not as strong it was lot weaker although I haven't actually charged it and turned it on yet. I was only charging little to find the leak holds a vacuum now. Now I'm going to pull the condenser and replace the Desiccant bag at this point if it still doesn't work right going to sell the car put enough money into this thing.

I got the old desiccant bag out here is a few pictures. I know from what I have read if you see gray or dark gray not good maybe metal from the compressor.

I charged it somehow I forgot to close the high side before I started the engine hopefully that crap didn't get pushed back into my 30lb bottle of R134a probalby only about 14-16 lbs left in there. The good news is I'm getting 50F air out of the vent and it's 108 right now.

Comparing to my ford focus which I use as a reference 50F air what I got from it while on high recirculate.