Search found 223 matches

by Al9
Tue Oct 20, 2020 1:38 am
Forum: Automotive Air Conditioning Forum
Topic: Volvo V50 2011 very high vibrating highside pressure
Replies: 3
Views: 113

Re: Volvo V50 2011 very high vibrating highside pressure

A severe oil overcharge can make the condenser completely useless (internally coated/pooled with excess oil to the point of being unable to exchange any heat). Still, checking if the orifice tube looks dirty is a great way to check for compressor wear (abuse creates serious wear), keeping in mind th...
by Al9
Mon Oct 19, 2020 8:41 am
Forum: Automotive Air Conditioning Forum
Topic: Volvo V50 2011 very high vibrating highside pressure
Replies: 3
Views: 113

Re: Volvo V50 2011 very high vibrating highside pressure

Sanden SD7V16 (or PXV16) compressor? If it's this one, i think it's supposed to fully destroke once a restriction keeps enough refrigerant from flowing around.
by Al9
Mon Oct 19, 2020 3:13 am
Forum: Automotive Air Conditioning Forum
Topic: Low oil level in the refrigerant
Replies: 2
Views: 97

Re: Low oil level in the refrigerant

Don't know how this test works, but it likely checks for how much oil is circulating together with the refrigerant, and a low oil circulation rate can also be caused by a lower than normal refrigerant charge. That said, having a FSM at hand would be the best option, but anyway Denso states ( here ) ...
by Al9
Sun Oct 18, 2020 3:45 am
Forum: Automotive Air Conditioning Forum
Topic: *FIXED**dying comp, cooling fan replaced* Old Delphi CVC-125 variable comp (TXV system) exhibiting a strange behaviour
Replies: 11
Views: 5910

Re: *FIXED**dying comp, cooling fan replaced* Old Delphi CVC-125 variable comp (TXV system) exhibiting a strange behavio

For anyone interested in the bubbling noise i experienced, according to this Denso patent https://patents.google.com/patent/JP2006200844A/en, it seems like it's entirely normal occurrence at low heat loads due to the TXV filling the evaporator up with a turbulent liquid refrigerant+oil flow while si...
by Al9
Fri Oct 16, 2020 2:52 am
Forum: Automotive Air Conditioning Forum
Topic: gauge readings
Replies: 18
Views: 982

Re: gauge readings

Previous owner or some workshop brainiac he/she entrusted the car to likely messed it up pretty bad trying to fix some cooling issue.
by Al9
Thu Oct 15, 2020 3:39 am
Forum: Automotive Air Conditioning Forum
Topic: gauge readings
Replies: 18
Views: 982

Re: gauge readings

Botched recharge attempt likely...
by Al9
Wed Oct 14, 2020 2:50 am
Forum: Automotive Air Conditioning Forum
Topic: 2002 Pontiac Ram Air Trans Am ac is not cooling properly
Replies: 67
Views: 5765

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

That poor thing is plugged up. Severely starved evaporator and a destroked compressor also. You should have heard a low droning sound inside with the comp running.
by Al9
Sat Oct 10, 2020 9:44 am
Forum: Automotive Air Conditioning Forum
Topic: Compressor oil
Replies: 4
Views: 276

Re: Compressor oil

What Scion? The only ones from that year are Xa's and Xb's and their Denso 5SE09 compressors are rated for ND oil 8 (any DEC PAG 46 is the commercial equivalent). Perhaps some compressor manufacturers/remanufacturers just won't bother about researching/listing the proper oil type and viscosity, and ...
by Al9
Thu Oct 08, 2020 4:25 am
Forum: Automotive Air Conditioning Forum
Topic: 2002 Pontiac Ram Air Trans Am ac is not cooling properly
Replies: 67
Views: 5765

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

At this point it gets nothing but a wild guess, keeping in mind that a little more is always better than a little less. I've once seen a RRR station recover half a fl oz of oil from my car's AC, but its specs are about one pound of refrigerant and 5 fl oz of PAG oil. Smaller system for a smaller car...
by Al9
Wed Oct 07, 2020 3:57 am
Forum: Automotive Air Conditioning Forum
Topic: 2002 Pontiac Ram Air Trans Am ac is not cooling properly
Replies: 67
Views: 5765

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

Don't know how the compressor is mounted on this car, but V5/V7 comps are generally mounted so that the control valve's colored dot tip points towards the ground. With compressor's head, i meant the rear shell (casing is composed of 3 separate shells).

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