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shortboxin · 06-15-2020, 10:00 PM

1. Flushed out the evaporator and hoses. Removed the condenser and flushed out.
2. Changed the orifice tube to the .062" RED.
3. Replaced the accumulator and added 6.5oz of PAG 46.
4. Evacuated the system for about 5 hours.
5. Charged the system with almost 3 full 12oz. cans of R134.

Pressures came down considerably this time and it cools a little better than before, even with an outdoor temp of 103° instead of 98°. Vent temp getting down to around 75° at idle.

LOW = 63PSI (90PSI previously)
HIGH = 275PSI (330PSI previously)

Took it for a drive and the vent temp dropped as low as 52° on the freeway, so that's an improvement of 6° even on a warmer day.

Additionally, the accumulator and suction hose was hot last time and this time it's nice and cold.

FINAL THOUGHTS: 1. I will investigate to make sure my blend is porting all of the air across the evaporator. 2. I may also add a ball valve to the incoming heater hose line so I can close it off during summer. I believe this is as good as it will get without changing out the condenser to parallel flow.

Thank you for all of your help!!!

06-15-2020, 10:00 PM	#15
shortboxin Registered User Join Date: Jan 2019 Location: Mesa Posts: 37	Re: A/C issues on 84 C10 with 5.3 LS 1. Flushed out the evaporator and hoses. Removed the condenser and flushed out. 2. Changed the orifice tube to the .062" RED. 3. Replaced the accumulator and added 6.5oz of PAG 46. 4. Evacuated the system for about 5 hours. 5. Charged the system with almost 3 full 12oz. cans of R134. Pressures came down considerably this time and it cools a little better than before, even with an outdoor temp of 103° instead of 98°. Vent temp getting down to around 75° at idle. LOW = 63PSI (90PSI previously) HIGH = 275PSI (330PSI previously) Took it for a drive and the vent temp dropped as low as 52° on the freeway, so that's an improvement of 6° even on a warmer day. Additionally, the accumulator and suction hose was hot last time and this time it's nice and cold. FINAL THOUGHTS: 1. I will investigate to make sure my blend is porting all of the air across the evaporator. 2. I may also add a ball valve to the incoming heater hose line so I can close it off during summer. I believe this is as good as it will get without changing out the condenser to parallel flow. Thank you for all of your help!!!