Hey Sir! , from what you have mentioned i can tell that you have a problem in the AC System , not sure where it comes from but i tell you from what i know , because i had an experience with this matter before , so the thing is as follows , the HP Line should be hot , i mean like real hot that is a normal thing , but the low pressure pipe should be significantly COLD to touch , when everything works as it should be make sure of the following as a checklist
- make sure the condenser fins are not clogged with Dust , particles and insects , make sure to clean it
- Make sure that the condenser fan kicks in at the right speed when you turn the AC system usually at the high speed but it could run in low speed
depending on the weather and traffic ....etc
- the amount of R-134 (Refrigerant Gas) is the right amount as mentioned from the car manufacturer which i think is (950 gram)
- there is no water moisture in the system - this can be solved by taking it to AC specialist to suck all the moisture out and vacuuming the system and refilling it with the right amount of R-134 (Refrigerant Gas)
- the compressor is not working efficiently (could be a bad compressor) - it is recommended to change the Receiver Dryer when you change the compressor
- Faulty Expansion Valve
- Clogged condenser or evaporator