Automotive Air Conditioning Information Forum (Archives)

Provided by

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

System pressures? Clog?

obriend78 on Sun August 29, 2010 11:35 AM User is offline

Year: 2000
Make: Honda
Model: Civic
Engine Size: 1.8L
Refrigerant Type: R134
Ambient Temp: 105
Pressure Low: 40
Pressure High: 300
Country of Origin: United States

Replaced compressor, drier, condenser,expansion valve, take the evap and all lines to AMA for Hecat - reassemble and add 8oz oil at correct locations. So far so good.
I have AAA mechanic evac - recharge 22oz R134 - vent temp were 40/50 range (guessing) but get a squeal (uh-oh) from the expansion valve every minute or so when the compressor kicks on. Got out the gauges and it looked OK (hmmm maybe LO side is a little to hi) After a week I notice an oil leak and low freon - assume I blew the compressor seal (#$%$#@).

Replace compressor (added 4 oz oil) , drier (1oz oil), expansion valve (1oz oil)
Found a buddy who knows AC to help evac - 22oz freon still have bubbles in glass - vent temp is only 80 (her we go again)
Notice the squeal is back, and worse the evap is not cold - gauge 40/350 - and the compressor is kicking on and off every 30 seconds or so - I assume hitting the hi pressure cut off. Let a little freon out and get to 300/40 at 1500rpm - 105 intake - vent is 80 - but still have the squeal and warm evap? Havent turned it on since then so as to save the compressor (sweating and swearing profusely)

My best guess is there is still a clog in the system (evap and or expansion valve) ????

What next - anyone??

Edited: Sun August 29, 2010 at 11:39 AM by obriend78

mk378 on Sun August 29, 2010 12:23 PM User is offline

You've put in too much oil. Way too much oil. Specified oil charge is 5 oz total. New compressors often come with oil in them, be sure to drain it and replace with the proper amount of new oil before installing.

obriend78 on Mon August 30, 2010 3:58 PM User is offline

I drained the new compressor before I added 4oz of oil.
Are you saying total system oil should be only 5 oz?
I got the numbers from the Honda manual?

So you would suggest breaking it down to get the oil out and try an evac/charge again?

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.