Search found 517 matches

by JohnHere
Sat Oct 16, 2021 9:55 pm
Forum: Automotive Air Conditioning Forum
Topic: 1984 corvette r12 parked for 15 years
Replies: 3
Views: 184

Re: 1984 corvette r12 parked for 15 years

My first thought is that you should get hold of a quality Manifold Gauge Set that will indicate the pressures on both the low and high sides. My second thought is that you want to conserve that precious R-12 by checking the system for leaks using a good "sniffer" before adding any more ref...
by JohnHere
Thu Oct 07, 2021 3:20 pm
Forum: Automotive Air Conditioning Forum
Topic: 2011 Hyundai Tucson a/c not working
Replies: 13
Views: 763

Re: 2011 Hyundai Tucson a/c not working

OK. I took the car to the shop today. The refrigerant was very low and so they recharged the system. Unfortunately, this did not fix the problem. After more analysis the conclusion was that the compressor is bad. The technicians working on the car stated that the system did not reach the required w...
by JohnHere
Wed Sep 29, 2021 1:55 pm
Forum: Automotive Air Conditioning Forum
Topic: No cold air 2002 Nissan sentra GXE 1.8L
Replies: 9
Views: 443

Re: No cold air 2002 Nissan sentra GXE 1.8L

As suggested, double-check your Manifold Gauge Set connections and valves. If they're correct and the adapter thumb-wheels are in the fully-clockwise open position, the static pressures (measured with the engine off) suggest that you have virtually no refrigerant remaining in the system. Are you sur...
by JohnHere
Sat Sep 25, 2021 9:33 am
Forum: Automotive Air Conditioning Forum
Topic: hose seals
Replies: 18
Views: 785

Re: hose seals

I bought replacement seals for my service gauge fittings. This. You should not have to use any mechanical means to tighten the fittings. The seals are definitely replaceable. I keep a close eye on mine and replace them all if they show any signs of wear or deterioration. I use a pointy tweezers to ...
by JohnHere
Sat Sep 25, 2021 9:23 am
Forum: Automotive Air Conditioning Forum
Topic: Mechanic Mixed PAG with POE...
Replies: 5
Views: 391

Re: Mechanic Mixed PAG with POE...

...my understanding right now is that the oil + dye requires a fair bit of oil to be added, and since the factory oil fill is 2.37 to 2.77 oz, it’s likely that a large percentage of the system is ester right now. According to the specs that I have for your vehicle, the oil amount range is the same ...
by JohnHere
Fri Sep 24, 2021 1:45 pm
Forum: Automotive Air Conditioning Forum
Topic: Mechanic Mixed PAG with POE...
Replies: 5
Views: 391

Re: Mechanic Mixed PAG with POE...

What was/were the initial problem(s) you were having with the system in your 2015 Accord that the shop dispensed UV dye and oil into it: Very slow leak over the course of a couple of years, slow leak over a few months, or did the refrigerant leak out suddenly, along with some/all of the oil? I'm not...
by JohnHere
Thu Sep 23, 2021 9:57 am
Forum: Automotive Air Conditioning Forum
Topic: 2011 Hyundai Tucson a/c not working
Replies: 13
Views: 763

Re: 2011 Hyundai Tucson a/c not working

When I connect to the low side with everything running I get a pressure of ~95 psi. I live in Florida and the temp was 90+F. I suspect this corresponds to the vapor pressure of the refrigerant at that temp. The compressor clutch appears to engaging (I hear it engaging and see the compressor spinnin...
by JohnHere
Wed Sep 22, 2021 8:29 am
Forum: Automotive Air Conditioning Forum
Topic: POA Valve Honking/Pulsing
Replies: 7
Views: 450

Re: POA Valve Honking/Pulsing

When testing a POA with compressed air, you should hear a "pop" when the valve reaches its set-point and then a "hiss" as the air flows through it. The noise and pressure fluctuations that you're seeing appear to be abnormal. Could this behavior be caused by the old internal soft...
by JohnHere
Mon Sep 20, 2021 9:11 am
Forum: Automotive Air Conditioning Forum
Topic: My turn, need the wizards
Replies: 35
Views: 1694

Re: My turn, need the wizards

An internally delaminating hose is something else I thought of after I posted, and it is another remote possibility. Only other thing I can think of is the evaporator. MVAC is often not easy to diagnose and repair, as has been said many times before. Let us know the results after you change-out the ...
by JohnHere
Mon Sep 20, 2021 7:41 am
Forum: Automotive Air Conditioning Forum
Topic: My turn, need the wizards
Replies: 35
Views: 1694

Re: My turn, need the wizards

Have you verified that there is not an OT installed in the line between the R/D and TXV causng an additional restriction?