your help plz ...

Hi there ..
Wanna your help plz...
I have changed the compressor for my lumina LTZ 2001... After that a noisy sound start to appear ... And cooling stopped after a while((around a week)) ...they told me to change the heater core ... And I changed it ... After that similar sound start to appear again ... And the cooling start to be reduced gradually ...and then no more cold air ...

The sound appears infront of the next to driver seat ...like (( HMMMMMM)) in an interrupted way ...

Plz ... I am boiling here in Dubai


I need your help ...what is the problem and what to do

Thanks in advance

???

With the system in normal operation and the controls set to full cold, what are the high and low side refrigerant pressures and the ambient temperature?

lol ,, to be honest ,, i don't know

That information might be crucial in diagnosing the system.

What i remember is somthing is 200 only....it is the pressure of gas they put