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by bohica2xo
Mon Nov 04, 2019 3:26 pm
Forum: Automotive Air Conditioning Forum
Topic: Pressure Switches Binary or Not
Replies: 14
Views: 2082

Re: Pressure Switches Binary or Not

You can place the LPCO in series with the HPCO when installed in the High side of the loop.

This will inhibit compressor operation below about 25f ambient, and when the system is completely empty - static pressure below 30 psi.

A little protection from the worst events.
by bohica2xo
Mon Oct 21, 2019 7:41 am
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor not kicking on when trying to recharge system
Replies: 16
Views: 3343

Re: AC Compressor not kicking on when trying to recharge system

Side can tap is the only way to go. Always works, any size can.

Year / Make / Model of your car would help us with a diagnosis.
by bohica2xo
Sun Oct 20, 2019 5:00 pm
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor not kicking on when trying to recharge system
Replies: 16
Views: 3343

Re: AC Compressor not kicking on when trying to recharge system

Low side service connector not depressing the Schrader valve. You have charged the service hose.

Try depressing the coupler a little bit to see if your low side gauge drops.
by bohica2xo
Sun Oct 20, 2019 10:13 am
Forum: Automotive Air Conditioning Forum
Topic: Restriction?
Replies: 11
Views: 1799

Re: Restriction?

A blockage at the TXV would result in a reduced low side pressure as the refrigerant stacked up in the receiver dryer. If the TXV was restricted you should see calm liquid in the sight glass. The receiver is designed to deliver liquid to the TXV. If the flow is reversed it does a lousy job of that. ...
by bohica2xo
Thu Oct 17, 2019 4:11 pm
Forum: Automotive Air Conditioning Forum
Topic: Restriction?
Replies: 11
Views: 1799

Re: Restriction?

Receiver / Dryer installed with flow in the right direction?
by bohica2xo
Mon Oct 14, 2019 5:08 pm
Forum: Automotive Air Conditioning Forum
Topic: Ac is not getting cold when ilde
Replies: 9
Views: 1152

Re: Ac is not getting cold when ilde

Well, we didn't have a Cadenza here in the US, but the 2011 Sorrento has the 3.5L V6. The 3.5 has a direct drive compressor, with an electronic control valve. It runs 100% of the time. So your issue could be an undercharged system, a bad control valve, a wiring issue or a worn out compressor. Start ...
by bohica2xo
Wed Oct 09, 2019 10:01 pm
Forum: Automotive Air Conditioning Forum
Topic: A/C quit
Replies: 12
Views: 1751

Re: A/C quit

Bummer. There are a bunch of relays someplace in that truck. I wish Mopar did a better job on electrics. Being known for crappy wiring for more than 50 years is not exactly a good thing. I have seen the piano box in Rams trucks before, as well as the rectangle. Low bidder on the wiring harness proba...
by bohica2xo
Tue Oct 08, 2019 9:00 pm
Forum: Automotive Air Conditioning Forum
Topic: A/C quit
Replies: 12
Views: 1751

Re: A/C quit

It has a relay in that circuit. Dodge used a Power boxy that looked like a piano, with relays inside... https://www.factorychryslerparts.com/images/parts/Chrysler/fullsize/00i99257.jpg But they sometimes used a rectangular box with fuses, with relays behind it https://www.youtube.com/watch?v=Y4iF0jA...
by bohica2xo
Mon Oct 07, 2019 5:14 pm
Forum: Automotive Air Conditioning Forum
Topic: A/C quit
Replies: 12
Views: 1751

Re: A/C quit

So no clutch pull in with a jumper in the relay socket? You can check the clutch coil resistance from the relay socket. Starting on "volts" with your DMM, key on. Probe the relay socket for voltage to ground. The terminal with +12v is connected to the battery. So the OTHER terminal is the ...
by bohica2xo
Mon Oct 07, 2019 5:09 pm
Forum: Automotive Air Conditioning Forum
Topic: Pressure Checks 2000 Excursion
Replies: 16
Views: 1988

Re: Pressure Checks 2000 Excursion

285 psi @ 96f ambient says you are not getting good condenser performance. That test is a good analog for leaving work at 4pm after the truck sits in the sun all day. You will have the cabin fan on max with the throttle open - and low ground speed. The fan clutch or the condenser (or both) need help...

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