Search found 225 matches

by Al9
Mon Sep 28, 2020 2:48 pm
Forum: Automotive Air Conditioning Forum
Topic: crazy high high side pressure, just right low side pressure
Replies: 4
Views: 1057

Re: crazy high high side pressure, just right low side pressure

Are the replacement fans OEM or aftermarket? Just replaced my cooling fan with a very good quality OEM supplier aftermarket (definitely not Chinese rubbish) and that solved a comp noise issue i used to experience for good. Can now feel a lot more airflow with the hood open than before. Quality contr...
by Al9
Fri Sep 25, 2020 1:09 am
Forum: Automotive Air Conditioning Forum
Topic: 1970 Oldsmobile AC Woes
Replies: 6
Views: 1581

Re: 1970 Oldsmobile AC Woes

Interesting point to note here, a POA that closes too much lowers the high side below normal values even with a fully charged system, almost as with a destroked variable compressor.
by Al9
Sat Sep 19, 2020 7:09 am
Forum: Automotive Air Conditioning Forum
Topic: 2012 Mercedes GLK 350 - A/C Cooling problem
Replies: 6
Views: 667

Re: 2012 Mercedes GLK 350 - A/C Cooling problem

Oscilloscopes and very expensive scan tools. That's if you want to troubleshoot and not just toss random parts at it hoping for the AC to behave itself. Ensuring that the system is leak-free and charged with the correct amount of refrigerant is always recommended as the first step whenever cooling a...
by Al9
Sat Sep 19, 2020 3:15 am
Forum: Automotive Air Conditioning Forum
Topic: 2012 Mercedes GLK 350 - A/C Cooling problem
Replies: 6
Views: 667

Re: 2012 Mercedes GLK 350 - A/C Cooling problem

The expansion device is a TXV. This, and the compressor's solenoid valve, work together to regulate refrigerant flow across the A/C loop at all times. Refrigerant pressure readings alone will provide little or no information, because this is an electronically regulated variable displacement compress...
by Al9
Thu Sep 17, 2020 2:04 pm
Forum: Automotive Air Conditioning Forum
Topic: Inspection gone wrong
Replies: 1
Views: 336

Re: Inspection gone wrong

No problems at all. All compressor seals, including the shaft one, are made to withstand way greater pressures than the ones you generated by turning the clutch hub by hand. Just drain any residual oil and refill that compressor with the proper amount (new compressor being fitted to a flushed to bar...
by Al9
Thu Sep 17, 2020 8:51 am
Forum: Automotive Air Conditioning Forum
Topic: 2002 Pontiac Ram Air Trans Am ac is not cooling properly
Replies: 68
Views: 8056

Re: 2002 Pontiac Ram Air Trans Am ac is not cooling properly

He probably meant to comment my suggestion of a 1 psi higher rated valve. I suggested it only because you stated (in the opening post) that you had evaporator freeze-up issues, as if the compressor wasn't destroking once the correct evaporator pressure was met or wasn't destroking at all. 1 psi high...
by Al9
Thu Sep 17, 2020 7:38 am
Forum: Automotive Air Conditioning Forum
Topic: toyota corolla ac not cooling
Replies: 16
Views: 5782

Re: toyota corolla ac not cooling

Things are starting to sound real messy. And AC is very delicate stuff.
by Al9
Thu Sep 17, 2020 7:35 am
Forum: Automotive Air Conditioning Forum
Topic: Evaporator Switch-Themoswitch Question
Replies: 21
Views: 2498

Re: Evaporator Switch-Themoswitch Question

I'd avoid the manual AC off and on thing for safety concerns. Eyes have to be on the road and hands have to be elsewhere than flipping a switch off and then on, all the time.

At this point the best option is the adjustable temp switch.

Weird stuff indeed.
by Al9
Wed Sep 16, 2020 7:49 am
Forum: Automotive Air Conditioning Forum
Topic: 2002 Pontiac Ram Air Trans Am ac is not cooling properly
Replies: 68
Views: 8056

Re: 2002 Pontiac Ram Air Trans Am ac is not cooling properly

No problem about the nick.

Orange sounds way too high to me.
If your compressor comes with the purple 41 psi control valve, both the purple 41 psi one and the blue 42 psi one might be fine as replacements. Your choice.
by Al9
Wed Sep 16, 2020 1:09 am
Forum: Automotive Air Conditioning Forum
Topic: 2002 Pontiac Ram Air Trans Am ac is not cooling properly
Replies: 68
Views: 8056

Re: 2002 Pontiac Ram Air Trans Am ac is not cooling properly

Yep, that's what controls compressor displacement. I even told the patent number where its inner workings are described to great depths. IMHO, definitely worth to try replacing it before condemning a compressor. Had yours been a Sanden SD7V16 comp, things would have been completely different. In the...

Go to advanced search