Freon capacity

SHANMITCH

MEMBER
2005 DODGE RAM
5.7L
V8
4WD
AUTOMATIC
130,000 MILES

What should my A/C high and low side be on the truck listed above 1500? Can you provide me with the capacity chart, in case I need to ad Freon? Thanks

Monday, August 10th, 2020 AT 1:55 PM

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good afternoon,

First, you cannot tell Freon level by pressures.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

The high side should be 2 times ambient temperature plus 15%.

The low side should be 25-30 pounds rock solid.

I attached the specs for you below.

What is the issue?

Roy

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Friday, April 23rd, 2021 AT 11:08 AM

SHANMITCH

MEMBER
2 POSTS

So how do I know if it needs Freon? The issue is the A/C is blowing cold, but not as cold as it use to it feels like so I think it may need Freon. I have never added Freon before so I wanted to make sure I know how to do it properly if it is low on Freon so as to not over charge the system. Thanks

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Friday, April 23rd, 2021 AT 11:08 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

The only way is to recover the Freon and see how much was recovered.

Then you need to evacuate the system for 1 hour and charge the exact amount.

You cannot tell Freon level by pressures.

Roy

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Friday, April 23rd, 2021 AT 11:08 AM