Ac blows cold, sometimes
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#3
The recharge low pressure port is on the upper rear left firewall area. Look behind the air intake hose.
Question about this while we are on the topic: I used a autoparts recharge, I am suspicious of the guage's accuracy. If one charges enough to get ice air, but technically not as much as you would put in for 100% charge - does this stress the system?
Thanks,
John
Question about this while we are on the topic: I used a autoparts recharge, I am suspicious of the guage's accuracy. If one charges enough to get ice air, but technically not as much as you would put in for 100% charge - does this stress the system?
Thanks,
John
#4
It's taking a chance when you charge any system without emptying completely and re-filling by weight. Every system is designed to work optimally within some fairly tight margins and you can't KNOW what's in there without emptying it first.
That said, I have a set of inexpensive gauges I use all the time and will watch the high side pressure as I add a little refrigerant at a time to an undercharged system if I don't think it has a significant leak. You need to know the limits of the system and be aware of the effects of ambient temperature on those readings.
Overcharging gets you not only warm interior air, but can also burst a hose or stress the compressor. That's why I say to be cautious if you don't at least have a set of gauges. As soon as it starts to blow cold.......STOP.
Unfortunately, if you are losing refrigerant you need to fix it, and I would never add stop leak to any of my systems. It can gum up the expansion valve or orifice and cause a blockage.
If it's leaking out more than a few ounces a year......fixing the source of the problem would be advised before bigger problems are created.
Hope this helps.
Jim
That said, I have a set of inexpensive gauges I use all the time and will watch the high side pressure as I add a little refrigerant at a time to an undercharged system if I don't think it has a significant leak. You need to know the limits of the system and be aware of the effects of ambient temperature on those readings.
Overcharging gets you not only warm interior air, but can also burst a hose or stress the compressor. That's why I say to be cautious if you don't at least have a set of gauges. As soon as it starts to blow cold.......STOP.
Unfortunately, if you are losing refrigerant you need to fix it, and I would never add stop leak to any of my systems. It can gum up the expansion valve or orifice and cause a blockage.
If it's leaking out more than a few ounces a year......fixing the source of the problem would be advised before bigger problems are created.
Hope this helps.
Jim
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Johnken (07-16-2017)