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AC recharge high pressures

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Camarofever
New User

Jul 9, 2016, 5:16 PM

Post #1 of 3 (2884 views)
AC recharge high pressures Sign In
My 1985 Camaro is having some problems. I just finished installing new compressor, orifice tube and dryer. Flushed the system with ac flush, added oil and hooked up the vacuum pump. After correcting a couple of leaks I held vacuum. As I added refrigerant my low side pressures worked the way up to 120psi, high side was 120 to 150psi. I stopped and let the car set and took a nap. When I returned the static pressure is at 120 on both sides. When I started the car and turned on the air low side pressure was 40psi, high side was 180 to 200+/-psi as the compressor cycled on and off a few times the low side made its way back to 120 to 130psi. High side ended up about the same as the low side. What am I missing?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 9, 2016, 8:48 PM

Post #2 of 3 (2870 views)
Re: AC recharge high pressures Sign In
A/C especially a pre 134a vehicle that just got a new compressor is going to need lots of info from you as to what was done and used for materials, what refrigerant now and a whole long list.


At the moment you are just reading credible static pressures of a condensable gas and that's it. All that leads up to being ready to charge a system at all not mentioned well enough and may have failed already - just can't say.


Worth the read on just charging when a system is known ready to charge,


http://autoforums.carjunky.com/..._A/C_SYSTEMS_P45460/


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 10, 2016, 4:17 AM

Post #3 of 3 (2868 views)
Re: AC recharge high pressures Sign In
Quote
as the compressor cycled on and off a few times the low side made its way back to 120 to 130psi. High side ended up about the same as the low side. What am I missing?
It appears the compressor wasn't running at that time.



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