Search found 1197 matches

by JohnHere
Tue Oct 10, 2023 10:59 pm
Forum: Automotive Air Conditioning Forum
Topic: Brand new AC compressor defective?
Replies: 4
Views: 4226

Re: Brand new AC compressor defective?

Enviro Safe is an alternative refrigerant comprising a mixture of propane and isobutane--very dangerous stuff. This Forum doesn't advocate the use of such refrigerants that aren't US-EPA approved. See #3 under "Forum rules."

I regret that I can't advise you further.
by JohnHere
Sun Oct 08, 2023 8:59 am
Forum: Automotive Air Conditioning Forum
Topic: Where is a micron gauge placed when vacuuming system?
Replies: 11
Views: 8999

Re: Where is a micron gauge placed when vacuuming system?

I noticed that the pictured micron gauge apparently is set up for MVAC R-12 systems and also (I believe) residential A/C systems, which means it has quarter-inch flare fittings that won't work with MVAC R-134a and R-1234yf systems. Therefore, you'll have to purchase the appropriate adapters to use i...
by JohnHere
Thu Sep 28, 2023 10:51 am
Forum: Automotive Air Conditioning Forum
Topic: Charging a custom system.
Replies: 31
Views: 10308

Re: Charging a custom system.

A couple of issues come to mind about the TXV. The first is that we don't know for certain whether the TXV the shop installed is any good. The second is that the sensing bulb is wrapped in what looks to me like duct tape, which isn't sufficient as far as insulating properties are concerned. It's lik...
by JohnHere
Thu Sep 28, 2023 6:58 am
Forum: Automotive Air Conditioning Forum
Topic: Charging a custom system.
Replies: 31
Views: 10308

Re: Charging a custom system.

In your first post, the low-side pressure was 36 PSI, which means that your evaporator is running 40°F or a bit higher, too warm for decent cooling.

What kind of TXV does your Civic have, a block-type or one having a sensing bulb?
by JohnHere
Sun Sep 24, 2023 9:03 am
Forum: Automotive Air Conditioning Forum
Topic: New Ac system acting up - need advice
Replies: 19
Views: 3656

Re: New Ac system acting up - need advice

UPDATE #2: Quite a bit more refrigerant was added to my system today. I think at least another 6-8ozs today for a total of about 10-12oz more. At 1500 rpms (ac full blast) I was able to get the low side pressure to just about 30psi and high side to 225psi. Ambient temperature outside is 86. Center ...
by JohnHere
Fri Sep 22, 2023 6:19 pm
Forum: Automotive Air Conditioning Forum
Topic: New Ac system acting up - need advice
Replies: 19
Views: 3656

Re: New Ac system acting up - need advice

First, check your Manifold Gauge Set and/or RRR machine, as well as the hoses, to verify no equipment leaks. At 86°F with a full charge and good condensing, the high side should be around 200 to 220 PSI. Since yours is an aftermarket system, chances are that the specs aren't the same as those for a ...
by JohnHere
Fri Sep 22, 2023 8:51 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: Evacuation Procedure
Replies: 6
Views: 13081

Re: Evacuation Procedure

swampy 6x6: Note that this thread is more than one year old, so you probably won't receive a response.
by JohnHere
Thu Sep 21, 2023 11:10 am
Forum: Automotive Air Conditioning Forum
Topic: New Ac system acting up - need advice
Replies: 19
Views: 3656

Re: New Ac system acting up - need advice

I, too, think the system is somewhat low on refrigerant. Presuming that you're testing under the proper conditions, not at idle, a low-side pressure of 30 PSI correlates to an evaporator temperature of around 34°F, which is just about right. We'll wait for you to post the high-side, center vent, and...
by JohnHere
Thu Sep 21, 2023 6:27 am
Forum: Automotive Air Conditioning Forum
Topic: Condenser upside down.
Replies: 20
Views: 5295

Re: Condenser upside down.

Typically, I add about 1/2-ounce to each on replacement with new components. Of course, this is guesswork unless you're starting with a completely "dry" system and adding exactly to specifications. Then, you can "oil balance" the system or add all the oil into the compressor if i...
by JohnHere
Wed Sep 20, 2023 9:18 am
Forum: Automotive Air Conditioning Forum
Topic: Condenser upside down.
Replies: 20
Views: 5295

Re: Condenser upside down.

Unless it has an oil cooler in it or an integral R/D—which looking at the photos, your universal condenser does not have—just turn it over so that it's in the correct orientation fitting-wise. Condensers that DO have an oil cooler and/or R/D would have the fittings in the correct orientation anyway,...