Search found 207 matches

by Al9
Tue Sep 29, 2020 4:04 pm
Forum: Automotive Air Conditioning Forum
Topic: Compressor Short Cycles with Correct Charge
Replies: 3
Views: 50

Re: Compressor Short Cycles with Correct Charge

You wanted some ideas and here they are. 1)Forget about cans. Not an accurate charging method, especially with modern TXV MVAC systems. Have it charged by a pro. Never release any refrigerant into the atmosphere. Also never remove an amount of refrigerant from a system hoping that a cooling issue so...
by Al9
Tue Sep 29, 2020 1:52 am
Forum: Automotive Air Conditioning Forum
Topic: crazy high high side pressure, just right low side pressure
Replies: 4
Views: 69

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

Don't know why all OP posts disappeared at once, but my brand new cooling fan unit is marketed by Valeo and equipped with a made in Spain Nidec Corporation (Japanese company, likely OEM supplier) motor. Don't know what kind of motors OP's brand uses either.
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: 69

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: 430

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: 122

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: 122

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: 72

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: 54
Views: 3110

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: 4404

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: 842

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.

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