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Re charge A/c

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,362
Location
Oklahoma
You can do it that way but you should really hook up a/c gauges to it. If you don't have the proper equipment you can overfill the system which will cause the hi/low switch to constantly kick the system in and out, it can also blow an a/c hose. If the system has air in it, it will need to be drained and vac'd. You have probably lost Freon due to an leak in the system. Look for wetness around the clutch area of the a/c compressor and also the crimp connections on your hoses (these places are the most common). You can get a can of R134 with stop leak in it, but I personally wont use it as it can make the valve plate sticky. On a new system, the low side pressure should run around 30 psi and the high side (on average) will run 7 times the low side (or 210). Small variations may exist depending on the condition of your a/c system. If you have abnormally low or high reading, you will need to find the cause of that problem for the system to work efficiently.
 

Tim Modine

Well-Known Member
Joined
Mar 3, 2019
Messages
78
Location
Rocky Point NY
Why does it need recharging?
Blowing just cool air. Not warm but not cold lol. I put a can in last year and was and fine all summer. I also have the valves closed on the heater hoses. I quess it’s leaking somewhere and should have it checked professionally since I don’t have gauges and don’t really know what I’m doing haha
 

Tim Modine

Well-Known Member
Joined
Mar 3, 2019
Messages
78
Location
Rocky Point NY
You can do it that way but you should really hook up a/c gauges to it. If you don't have the proper equipment you can overfill the system which will cause the hi/low switch to constantly kick the system in and out, it can also blow an a/c hose. If the system has air in it, it will need to be drained and vac'd. You have probably lost Freon due to an leak in the system. Look for wetness around the clutch area of the a/c compressor and also the crimp connections on your hoses (these places are the most common). You can get a can of R134 with stop leak in it, but I personally wont use it as it can make the valve plate sticky. On a new system, the low side pressure should run around 30 psi and the high side (on average) will run 7 times the low side (or 210). Small variations may exist depending on the condition of your a/c system. If you have abnormally low or high reading, you will need to find the cause of that problem for the system to work efficiently.
Thank you sir for the insight.
 

Nige

Senior Member
Joined
Jun 22, 2011
Messages
28,984
Location
G..G..G..Granville.........!! Fetch your cloth.
You can do it that way but you should really hook up a/c gauges to it. If you don't have the proper equipment you can overfill the system which will cause the hi/low switch to constantly kick the system in and out, it can also blow an a/c hose. If the system has air in it, it will need to be drained and vac'd. You have probably lost Freon due to an leak in the system. Look for wetness around the clutch area of the a/c compressor and also the crimp connections on your hoses (these places are the most common). You can get a can of R134 with stop leak in it, but I personally wont use it as it can make the valve plate sticky. On a new system, the low side pressure should run around 30 psi and the high side (on average) will run 7 times the low side (or 210). Small variations may exist depending on the condition of your a/c system. If you have abnormally low or high reading, you will need to find the cause of that problem for the system to work efficiently.
And that's before thinking about the condition of the dryer or the accumulator ...........
 

heymccall

Senior Member
Joined
Feb 19, 2007
Messages
5,352
Location
Western Pennsylvania
And that's before thinking about the condition of the dryer or the accumulator ...........

I just had a RedDot dryer dump all the desiccant through the system on one of my Takeuchis. Apparently, the desiccant balls are in a bag (that can rupture). Granted, it was a 10k hour machine.
 
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