Well i have been trying to fix my AC forever and haven't been successful. I have had the Professionals here in AZ working on this thing and even after putting almost 1k into parts and labor the thing performs about the same that it did before. It was an R134A conversion, which i was told was not the best refrigerant to use in these cars. I assumed that was my problem and converted back. Here is everything i did:
-New compressor
-New Receiver
-New flexible compressor suction/discharge hoses
-New seals all around
-New TXV
-Professionally flushed (with HECAT equipment)
-----------Evaporator
-----------Condenser
------------All lines
-Added 7oz mineral oil via compressor suction port
-Less than 2 year old OEM turbo fan clutch with 10 blade fan
-Brand new fan shroud
-Dual aux fans added
-Single pusher fan added
-Stock inter cooler, engine under cover in place
-Got all windows tinted
-Heater core completely bypassed
System was evacuated and charged by weight by the pros. Seemed to cool well in their shop when run for awhile and held at 1500 rpm, however taking it into the real world heat of AZ the thing struggles to cool. Initial running of the AC results in warm air for at least a few minutes, after that, its mediocre, about 60-65 out the vents on high recirc for about 15 mins before the temperature gradually comes down and settles about 50-55 depending on driving conditions. On the highway it will come down to 45 at the vents.
Short trips, AC is not worth turning on because it takes so long to get cool, and idle is almost worthless. Have had it in and out of the shop several times and they basically tell me everything checks out and its working as it should. I see claims of people getting vent temps in the 40's in 100+ weather, and i dont see how that is possible. They are either exaggerating or my system isn't working properly.
If you care to read, there's an entire thread on the AC forum about my whole problem, but here are the pressure/temperature readings. It was a 95-100 degree day but i didn't measure ambient 2" in front of the condenser.
http://www.autoacforum.com/messageview.cfm?catid=2&threadid=22263
All with fan on high and in recirc mode with windows open.
This is after running the ac for 10 minutes, after driving about 45mph. I took pressure readings after they stabilized. At 1500 rpm high and low side pressures were slowly roaming up and down about 10-15 psi.
Idle:
High: 350 psi Low: 50 psi
Vent temp: 65 deg F
Suction line warm
1500 RPM (hood open for this one to hold idle up)
High: 325 psi Low: 25 psi
Vent temp: 55 deg f
Suction line barely cool
My question to you is, does the AC on these cars just suck or is there actually something wrong with my system?
Thanks.
-New compressor
-New Receiver
-New flexible compressor suction/discharge hoses
-New seals all around
-New TXV
-Professionally flushed (with HECAT equipment)
-----------Evaporator
-----------Condenser
------------All lines
-Added 7oz mineral oil via compressor suction port
-Less than 2 year old OEM turbo fan clutch with 10 blade fan
-Brand new fan shroud
-Dual aux fans added
-Single pusher fan added
-Stock inter cooler, engine under cover in place
-Got all windows tinted
-Heater core completely bypassed
System was evacuated and charged by weight by the pros. Seemed to cool well in their shop when run for awhile and held at 1500 rpm, however taking it into the real world heat of AZ the thing struggles to cool. Initial running of the AC results in warm air for at least a few minutes, after that, its mediocre, about 60-65 out the vents on high recirc for about 15 mins before the temperature gradually comes down and settles about 50-55 depending on driving conditions. On the highway it will come down to 45 at the vents.
Short trips, AC is not worth turning on because it takes so long to get cool, and idle is almost worthless. Have had it in and out of the shop several times and they basically tell me everything checks out and its working as it should. I see claims of people getting vent temps in the 40's in 100+ weather, and i dont see how that is possible. They are either exaggerating or my system isn't working properly.
If you care to read, there's an entire thread on the AC forum about my whole problem, but here are the pressure/temperature readings. It was a 95-100 degree day but i didn't measure ambient 2" in front of the condenser.
http://www.autoacforum.com/messageview.cfm?catid=2&threadid=22263
All with fan on high and in recirc mode with windows open.
This is after running the ac for 10 minutes, after driving about 45mph. I took pressure readings after they stabilized. At 1500 rpm high and low side pressures were slowly roaming up and down about 10-15 psi.
Idle:
High: 350 psi Low: 50 psi
Vent temp: 65 deg F
Suction line warm
1500 RPM (hood open for this one to hold idle up)
High: 325 psi Low: 25 psi
Vent temp: 55 deg f
Suction line barely cool
My question to you is, does the AC on these cars just suck or is there actually something wrong with my system?
Thanks.