Search found 70 matches

by Al9
Sun May 31, 2020 3:41 am
Forum: Automotive Air Conditioning Forum
Topic: Common A/C problem in Toyota Yaris
Replies: 7
Views: 157

Re: Common A/C problem in Toyota Yaris

Some may get away with only replacing the failed compressor and the condenser but more often than not, this only leads to failure of the new compressor and even more expensive repair bill. I think it's just idiot technicians getting the flush, compressor oiling, refrigerant charge and compressor ru...
by Al9
Sun May 31, 2020 3:14 am
Forum: Automotive Air Conditioning Forum
Topic: An inquiry about A/C compressors failure
Replies: 5
Views: 179

Re: An inquiry about A/C compressors failure

Maybe a non removable filter means having to either cut a line open or replace it, and a removable one means two more potential leak points...
by Al9
Fri May 29, 2020 12:54 am
Forum: Automotive Air Conditioning Forum
Topic: Common A/C problem in Toyota Yaris
Replies: 7
Views: 157

Re: Common A/C problem in Toyota Yaris

In my country we rarely use the heater. So, do you think that keeping the A/C running all the time (at a reduced cooling maybe) will help in preventing poor lurbrication of compreesor parts during the cold months. What Bohica is trying to tell you is that the compressor might be running open-circui...
by Al9
Thu May 28, 2020 12:13 pm
Forum: Automotive Air Conditioning Forum
Topic: Common A/C problem in Toyota Yaris
Replies: 7
Views: 157

Re: Common A/C problem in Toyota Yaris

Don't really know what Denso means with black sludge - but i've tested a handful of second hand TXVs in my spare time and noticed the evaporator inlet side is always coated with black sludge - looks like carbonized oil, piston ring wear material (car had a Sanden SD6V10 compressor with piston rings)...
by Al9
Wed May 27, 2020 2:56 am
Forum: Automotive Air Conditioning Forum
Topic: Jumping in with both feet, some troubleshooting questions
Replies: 8
Views: 180

Re: Jumping in with both feet, some troubleshooting questions

This is a fixed displacement Denso 10P17C - this one will never do any fancy destroke stuff at all. Pure bang-bang control (a carefully set TXV makes it more efficient, but your system has an orifice tube). Really reliant upon proper oil return (good oil-refrigerant solubility and low evaporator sup...
by Al9
Tue May 26, 2020 12:28 pm
Forum: Automotive Flushing Forum
Topic: Contact cleaner for a DIY evaporator flush
Replies: 0
Views: 103

Contact cleaner for a DIY evaporator flush

Hi everyone. About to get a second hand evaporator for my car. Planning to keep it as a spare just in case something somehow goes wrong with the old one. It's a parallel flow Denso design, aluminum, typical of early 2000s Jap cars. Evaporator replacement looks really easy on my car. I'd like to flus...
by Al9
Tue May 26, 2020 9:58 am
Forum: Automotive Air Conditioning Forum
Topic: Jumping in with both feet, some troubleshooting questions
Replies: 8
Views: 180

Re: Jumping in with both feet, some troubleshooting questions

unless it's a variable-displacement type compressor that's partially or fully de-stroked at the time of testing. On the original 2.8L V6 engine (and on the 95 S6's 2.2L straight 5 turbo too), compressor is a Diesel Kiki/Zexel DCW17B - internally controlled variable displacement wobble plate. Contro...
by Al9
Mon May 25, 2020 5:09 am
Forum: Automotive Air Conditioning Forum
Topic: R4 compressor NEVER cycles
Replies: 15
Views: 237

Re: R4 compressor NEVER cycles

You're not 100% sure it's frozen up until you either see it covered with ice or feel the airflow suddenly tapering off as JohnHere pointed out.
by Al9
Mon May 25, 2020 2:06 am
Forum: Automotive Air Conditioning Forum
Topic: First Post!! Help
Replies: 11
Views: 763

Re: First Post!! Help

Proper refrigerant charge is really critical with these compressors. The TXV is set up to keep a stable refrigerant flow through the evaporator even at really low heat loads, at the cost of losing energy efficiency due to letting the compressor pump denser wet (that is, in saturated state) refrigera...
by Al9
Sun May 24, 2020 8:17 am
Forum: Automotive Air Conditioning Forum
Topic: 2015 Subaru Forester AC Compressor replacement
Replies: 22
Views: 3512

Re: 2015 Subaru Forester AC Compressor replacement

I wouldn't charge so much oil through the refrigerant lines. This may end up starving the compressor of oil during startup. When installing a compressor, the system's oil charge is usually poured inside the compressor (either suction port if there's no oil drain hole on the compressor's housing, or ...

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