Automotive Air Conditioning Information Forum (Archives)

Jrosentel2000 on Mon July 20, 2015 9:30 AM

Year: 2006
Make: Honda
Model: Civic
Engine Size: 1.8L
Refrigerant Type: R134a
Ambient Temp: 80
Pressure Low: 80
Pressure High: 140
Country of Origin: United States

Ok, looking for some advice on an issue I'm having. My mechanic removed the refrigerant and added back in the correct amount called for. The low side pressure read 80 and the high side 140. When he increased the RPM, it created a vacuum on the low side and the high side remained the same. The car only blows hot air. No leaks in the system, it holds pressure fine. His thought is that it needs a new compressor, but he admitted that he is not completely positive. I am looking for any suggestions as to what this might be before I replace the compressor and possibly find out that's not the issue. I am a novice mechanic. Could probably do some work myself, but I do not have the equipment to evacuate and recharge the system, so doing work myself is tough. Thanks for any help.

Jrosentel2000 on Mon July 20, 2015 9:35 AM

Forgot to mention that compressor clutch engages and spins as expected.

jsmitty on Tue July 21, 2015 12:16 AM

From what I've learned, vacuum on the low side indicates a restriction in the system. Orifice tube plugged (or TXV, if equipped).