Search found 423 matches

by bohica2xo
Sun Jul 15, 2018 8:34 pm
Forum: Automotive Air Conditioning Forum
Topic: Floating RPM when AC on
Replies: 2
Views: 45

Re: Floating RPM when AC on

Not an A/C problem.

Engine idle speed is controlled by the ECM. Take it to BMW & have them read the codes, something is not functioning properly in the engine controls.

Is this car located in the USA?
by bohica2xo
Sun Jul 15, 2018 4:47 pm
Forum: Automotive Air Conditioning Forum
Topic: Working on fire engine AC (again)
Replies: 21
Views: 353

Re: Working on fire engine AC (again)

The compressor on that truck easily makes 15,000 btu/h by 3000 compressor shaft RPM. It is a 323 cc/rev unit. That valve is for a 1978-85 Porsche 928. An R12 car with a little Nippondenso 6E171 compressor. That valve also crosses to Dodge K car, Renault LeCar Dodge mini vans... Nothing with big syst...
by bohica2xo
Sat Jul 14, 2018 8:58 am
Forum: Automotive Air Conditioning Forum
Topic: Working on fire engine AC (again)
Replies: 21
Views: 353

Re: Working on fire engine AC (again)

Wow. I would have expected a larger valve with that large of a system. That is a replacement valve for a 924 Porsche. Backing it out reduces seat pressure, and increases refrigerant flow. The diaphragm motor only has so much stroke. You could put that disassembled valve body in the freezer to see it...
by bohica2xo
Sat Jul 14, 2018 8:37 am
Forum: Automotive Air Conditioning Forum
Topic: Airflow problem on '96 explorer
Replies: 5
Views: 46

Re: Airflow problem on '96 explorer

Modern cars don't overheat with completely dead fan clutches, but the condenser airflow takes a big hit. Yes, you need to have the full charge in a system to evaluate it. Your high side reading is low, but that could be low charge or poor compressor performance. Fan clutches wear out. Sometimes afte...
by bohica2xo
Sat Jul 14, 2018 7:12 am
Forum: Automotive Air Conditioning Forum
Topic: Missing fitting can’t find it anywhere please help
Replies: 4
Views: 49

Re: Missing fitting can’t find it anywhere please help

See the steel nut on the end of the hose? That should screw right on the end of your dryer.

The whole stack of brass fittings was just a pair of dry break couplers. Eliminate the whole thing & screw the hose right on the dryer.
by bohica2xo
Sat Jul 14, 2018 7:06 am
Forum: Automotive Air Conditioning Forum
Topic: Airflow problem on '96 explorer
Replies: 5
Views: 46

Re: Airflow problem on '96 explorer

You can not charge a system by pressure. It is not a tire you can air up or down for better performance. Pressures are used for diagnostics, and your issues would appear to be a significant undercharge & a worn out fan clutch. The correct charge weight for your vehicle Is 26 ounces of refrigeran...
by bohica2xo
Fri Jul 13, 2018 6:49 pm
Forum: Automotive Air Conditioning Forum
Topic: 2012 Nissan Pathfinder AC help.
Replies: 1
Views: 32

Re: 2012 Nissan Pathfinder AC help.

2 noisy aftermarket compressors in a row? Sure. Aftermarket parts can be fitted to wider tolerances, and work ok, but the OEM expects more from it's suppliers. I believe Valeo was the OEM supplier on that one. Denso stuff has always been a quality alternative, and is OEM on many cars. The OEM compre...
by bohica2xo
Fri Jul 13, 2018 6:17 pm
Forum: Automotive Air Conditioning Forum
Topic: Missing fitting can’t find it anywhere please help
Replies: 4
Views: 49

Re: Missing fitting can’t find it anywhere please help

Ah, the old mystery assembly valve. You can omit it & just reassemble the system. That is actually a dry coupler. We see them occasionally, last time one surfaced there was a thread about it: https://www.autoacforum.com/messageview.cfm?catid=4&threadid=16459 Scroll down in that thread for pi...
by bohica2xo
Fri Jul 13, 2018 6:09 pm
Forum: Automotive Air Conditioning Forum
Topic: Airflow problem on '96 explorer
Replies: 5
Views: 46

Re: Airflow problem on '96 explorer

Why was the system recharged?

What process did you use to get the correct charge weight installed?

.
by bohica2xo
Fri Jul 13, 2018 5:59 pm
Forum: Automotive Air Conditioning Forum
Topic: Black death? Dry soot?
Replies: 7
Views: 133

Re: Black death? Dry soot?

1) Out of the belly leak on your compressor.


2) Powdered compressor from running without oil


3) If that much of the compressor wound up at the OT, yes I would clean everything & replace the condenser.

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