Search found 35 matches

by Excursion2001
Sat Jun 26, 2021 10:08 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Update So I charged it to close as 68oz as possible it’s like 98 for the Ambient temperature the low was 47psi high side was 203psi and this was during the night time . It was blowing 60 degrees out of the vents at idle and I found that the front OT had a little trash in it so I put a new one in and...
by Excursion2001
Sat Jun 26, 2021 6:31 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

You don't use a scale with small cans. Just know how much is in each can. Be as close as you can to the vehicle capacity. Ok well I just bought one so I’ll try and get the last can half way and that should put me close to 68oz and this just started to happen I think my OT came out or something the ...
by Excursion2001
Sat Jun 26, 2021 5:04 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Ok, well then the basics. We charge systems by weight. Once you have the correct weight in the system we evaluate the system by measuring pressures and temperatures. You are at a point where you need to recover the refrigerant, evacuate and then charge the full charge by weight. . Will do . I’ll re...
by Excursion2001
Sat Jun 26, 2021 4:56 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Why would you bleed refrigerant? So you really have no idea what the charge level in the system is then? My step dad is trying to help as well that’s what he told me to do cause he said it was on the low side was high . I’m not ac Tech I’m 22 I build engines and transmissions I’m trying best to lea...
by Excursion2001
Sat Jun 26, 2021 4:33 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Why would you bleed refrigerant? So you really have no idea what the charge level in the system is then? My step dad is trying to help as well that’s what he told me to do cause he said it was on the low side was high . I’m not ac Tech I’m 22 I build engines and transmissions I’m trying best to lea...
by Excursion2001
Sat Jun 26, 2021 4:10 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Sounds like the pump is still capable, what was the ambient during the test? And what did the low side drop from / to? It was 105 when I bled some pressure off cause it was slightly to high on the low so I got it to 55 psi then I ran the test when I did the test my low side dropped to about 30psi a...
by Excursion2001
Sat Jun 26, 2021 3:40 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Aftermarket TXV can be basically badly machined useless Chinese junk if unlucky. I tell people to buy (and refurbish too. All it takes is some freeze spray, some DEC PAG oil, some q-tips and some dry contact cleaner to flush any crud/dye/old oil out) second hand TXVs if they can't lay their hands o...
by Excursion2001
Sat Jun 26, 2021 3:23 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Open the doors put the cabin fan(s) on highest speed and raise the engine RPM to 1500+ Observe the high side pressure at maximum load. If it is below 2.5 times the ambient temperature, temporarily block the condenser air flow and test again. If the compressor won't hit 300 psi on a 100f day it is t...
by Excursion2001
Sat Jun 26, 2021 12:48 pm
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

Open the doors put the cabin fan(s) on highest speed and raise the engine RPM to 1500+ Observe the high side pressure at maximum load. If it is below 2.5 times the ambient temperature, temporarily block the condenser air flow and test again. If the compressor won't hit 300 psi on a 100f day it is t...
by Excursion2001
Sat Jun 26, 2021 11:53 am
Forum: Automotive Air Conditioning Forum
Topic: Low side normal /high side low stumped
Replies: 78
Views: 43389

Re: Low side normal /high side low stumped

I have just a couple thoughts to add: I wouldn’t worry about the high side pressures being too low. They are too low because you don’t have very much cooling, the pressure should be low. If you get good AC performance back the pressure will go up. It’s like ordering 20 pieces of McNuggets and getti...