Search found 1243 matches

by JohnHere
Wed Aug 24, 2022 9:04 am
Forum: Automotive Air Conditioning Forum
Topic: LO Side 0 PSI/ Vacuum, HI Side 100 psi
Replies: 3
Views: 2840

Re: LO Side 0 PSI/ Vacuum, HI Side 100 psi

The first set of pressures with the engine at idle and the compressor running suggests a very low refrigerant charge, although to get meaningful pressure readings, the engine should be at about 1,800 RPM, A/C and blower on maximum, doors and windows open, and a known, full refrigerant charge in the ...
by JohnHere
Tue Aug 23, 2022 8:06 am
Forum: Automotive Air Conditioning Forum
Topic: Freon scam site
Replies: 6
Views: 1626

Re: Freon scam site

Nah...30 pounds of "make in USA" refrigerant, an oven mitt, and a shower cap, all for less than $50.00 :lol:
by JohnHere
Sat Aug 20, 2022 3:30 pm
Forum: Automotive Air Conditioning Forum
Topic: First AC Job
Replies: 9
Views: 2567

Re: First AC Job

That sounds great. Did you have an opportunity to measure the center-vent temps, and at what ambient temperature?

Sounds like you're pretty close on the oil amount, if a little over. Better that than too little, I think.
by JohnHere
Sat Aug 20, 2022 11:58 am
Forum: Automotive Air Conditioning Forum
Topic: My R4 compressor never cycles, either
Replies: 4
Views: 1793

Re: My R4 compressor never cycles, either

Curiously, an acquaintance owned a 1993 Suburban that had an adjustable clutch cycling switch.
by JohnHere
Sat Aug 20, 2022 11:34 am
Forum: Automotive Air Conditioning Forum
Topic: First AC Job
Replies: 9
Views: 2567

Re: First AC Job

A belated Welcome to the Forum. Mrs. JohnHere and I took some R&R at a cabin in the mountains of North Carolina, so I've been off the Forum for a while. Reading your first post, it seemed to me that the system just lost all its refrigerant due to the condenser leak. Thus, the PCM wasn't receivin...
by JohnHere
Tue Aug 16, 2022 4:13 pm
Forum: Automotive Air Conditioning Forum
Topic: Yellow charge hose questions
Replies: 14
Views: 4544

Re: Yellow charge hose questions

Thats gonna be tough when i need to evacuate the system to fix the leaky component..honda uses dye to find leaks and they are fixing ac issues left and right with the current model civics/accords/crvs Not sure I understand. Using a good quality sniffer while the system still contains refrigerant wi...
by JohnHere
Mon Aug 15, 2022 8:07 am
Forum: Automotive Air Conditioning Forum
Topic: My R4 compressor never cycles, either
Replies: 4
Views: 1793

Re: My R4 compressor never cycles, either

Can anyone here explain to me how you adjust the low pressure cycling switch that’s accumulator mounted? I have a 94 Suburban k2500. This is the first time I’ve heard of adjusting the switch. I'm not familiar with your particular cycling switch. But IIRC, some of them have an adjustment screw betwe...
by JohnHere
Mon Aug 15, 2022 7:46 am
Forum: Automotive Air Conditioning Forum
Topic: 1987 Buick Grand National R12 charge
Replies: 49
Views: 14147

Re: 1987 Buick Grand National R12 charge

I tried to upload pics of my gauges, thermometers etc but the forum won’t let me load them. The files are all too large. As an aside, my camera usually saves photos anywhere from 2MB to 4MB, but the maximum photo size on this Forum is 256K. The best way I've found to have the system accept photos i...
by JohnHere
Sun Aug 14, 2022 9:10 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: Evacuation Procedure
Replies: 6
Views: 16072

Re: Evacuation Procedure

The only way I can think of to test a vacuum pump is to attach a Manifold Gauge Set directly to the pump, run it, and see what it pulls. If you're close to sea level, a good pump should pull down to about 29.94 Inches of Mercury. At higher elevations, the vacuum reading will be correspondingly less.
by JohnHere
Sat Aug 13, 2022 8:54 pm
Forum: Automotive Air Conditioning Forum
Topic: Yellow charge hose questions
Replies: 14
Views: 4544

Re: Yellow charge hose questions

Question: I bought r1234yf PAG dye but my car 2019 CRV says it uses POE oil. Is it a problem to put PAG dye in this ac system? This is new and uncharted territory, so I'll say up-front that I'm not 100-percent sure. What I've heard is that MACS discourages the use of dye in R-1234yf systems regardl...