Search found 311 matches

by bohica2xo
Mon May 21, 2018 4:13 am
Forum: Automotive Air Conditioning Forum
Topic: Pressure Relief Valve?
Replies: 1
Views: 51

Re: Pressure Relief Valve?

In theory, the HPRV should re-seat after opening. Sometimes they do not. If you have a valve that fits, but the threaded portion is bottoming out before the O ring seals you can probably trim the threads to the length of the part it is replacing. The site sponsor should have the right one available....
by bohica2xo
Sun May 20, 2018 8:18 am
Forum: Automotive Air Conditioning Forum
Topic: AC accumulator draining too fast, high hi side
Replies: 5
Views: 196

Re: AC accumulator draining too fast, high hi side

Yeah Ice it is a TRSA12B - still say there is an H missing there someplace...

Feathers? I guess Texans pluck chickens in their rigs. Mostly I see dog hair in evaporators around here.
by bohica2xo
Sun May 20, 2018 8:12 am
Forum: Automotive Air Conditioning Forum
Topic: Stuck Compressor Clutch Plate: Suggestions on Removal
Replies: 19
Views: 368

Re: Stuck Compressor Clutch Plate: Suggestions on Removal

Nice work around on a unit with no puller access. Glad to see you got it fixed

A lot of labor however.
Commercial shops would replace the compressor in less time than it took to drill the rivets & modify the puller.

.
by bohica2xo
Sun May 20, 2018 8:04 am
Forum: Automotive Air Conditioning Forum
Topic: Fog and refrigerant blown out of vents during recharge
Replies: 7
Views: 109

Re: Fog and refrigerant blown out of vents during recharge

Nitrogen is the industry standard. Normally supplied from a high pressure tank with a regulator. 134a can be used to pressurize a system for leak testing, but if you have a big leak a single can may not last long enough to locate it. That is why we use nitrogen in a shop. Soapy water works, but the ...
by bohica2xo
Sun May 20, 2018 7:53 am
Forum: Automotive Air Conditioning Forum
Topic: Adding UV leak detector question.
Replies: 4
Views: 69

Re: Adding UV leak detector question.

And the ol' jumper wire kills another compressor!

The low pressure switch keeps the compressor from running when there is not enough refrigerant in the system to circulate oil.

Your compressor is done. The condenser is now contaminated with debris from the compressor.

.
by bohica2xo
Sun May 20, 2018 7:19 am
Forum: Automotive Air Conditioning Forum
Topic: 2014 Land Cruiser AC Problem
Replies: 8
Views: 258

Re: 2014 Land Cruiser AC Problem

Please STOP telling people to jam solid objects in to accessory drives on running engines. I have see what happens when a screwdriver was used to "tap" a clutch - took out a radiator and the hood. Could have killed the guy that tried it. Check & adjust the clutch gap. No need to do dan...
by bohica2xo
Fri May 18, 2018 4:07 pm
Forum: Automotive Air Conditioning Forum
Topic: Fog and refrigerant blown out of vents during recharge
Replies: 7
Views: 109

Re: Fog and refrigerant blown out of vents during recharge

Yes, the evaporator is done. Unless you blew a heater core at exactly the same time as you were charging... System open to the elements for 6 years takes a toll on parts. Internal corrosion from years of atmospheric humidity. A leak that won't hold 10" vacuum? Yeah, don't bother trying to charg...
by bohica2xo
Thu May 17, 2018 8:12 pm
Forum: Automotive Air Conditioning Forum
Topic: AC accumulator draining too fast, high hi side
Replies: 5
Views: 196

Re: AC accumulator draining too fast, high hi side

It is doubtful the evaporator is the issue. To diagnose it correctly you need to charge the correct weight in to the system. You can't determine the charge level by pressure. We also need temperatures to relate to the pressures. If your ambient temperature is 72f, 315 on the high side is bad indeed....
by bohica2xo
Thu May 17, 2018 6:37 pm
Forum: Automotive Air Conditioning Forum
Topic: Don't know how much oil I lost
Replies: 6
Views: 204

Re: Don't know how much oil I lost

Your title really says it all. Precision guesswork is gambling. Add just enough oil, and things will work out. Add too much, and you will be flushing excessive oil. Add too little and you will be flushing bits of ground up compressor. In your case, the leak happened all at once, while you were prese...
by bohica2xo
Thu May 17, 2018 6:29 pm
Forum: Automotive Air Conditioning Forum
Topic: 1999 Mack MR688S inefficiency
Replies: 4
Views: 128

Re: 1999 Mack MR688S inefficiency

Yep. I just pulled the bottom line off of the condenser on a 2000 Malibu. Drained a solid 20 ounces of oil. The local Firestone monkeys had put 3 compressors on it & charged it with the magic machine each time. Every receipt she had showed a charge for "refrigerant oil". It would not c...

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