roger2
.
2005 Cavalier. As in title, the system appears to be over-charged. And the compressor cycles on-off frequently (every 30 seconds approximately) when the engine is at idle or roughly below 25mph when driving. So no cold air unless I am driving steadily at a higher speed.
Low-side pressure readings in the pics below were taken with both AC and fan speed full on, windows open, engine at idle. The gauge has been tested OK on another (newer) car's system.
Oddly (to me) the pressure is higher when the compressor is off, and comes down a little, although still too high, when the compressor is on.
Questions:
1) can the compressor on/off cycling issue be resolved by simply evacuating some of the r134 from the system, to get the correct pressure?
2) if yes to the question above, can r134 be evacuated from the system by simply pulling the trigger on my gauge/recharge hose when no recharge can is attached? And if I do this, will moisture from the atmosphere be able to enter the system possibly causing other issues?
Thanks....
compressor = OFF
compressor = ON
refill hose trigger
Low-side pressure readings in the pics below were taken with both AC and fan speed full on, windows open, engine at idle. The gauge has been tested OK on another (newer) car's system.
Oddly (to me) the pressure is higher when the compressor is off, and comes down a little, although still too high, when the compressor is on.
Questions:
1) can the compressor on/off cycling issue be resolved by simply evacuating some of the r134 from the system, to get the correct pressure?
2) if yes to the question above, can r134 be evacuated from the system by simply pulling the trigger on my gauge/recharge hose when no recharge can is attached? And if I do this, will moisture from the atmosphere be able to enter the system possibly causing other issues?
Thanks....
compressor = OFF
compressor = ON
refill hose trigger
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