AC just quit blowing cold all of the sudden - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Ultramaroon · 03-09-2022, 01:46 PM

Quote:

Originally Posted by humfrz

Pretty much so. For me, AC stuff is NOT a DIY thing. Not much anymore is a DIY thing -

Sure it is! I have a vacuum pump and reclamation stuff. It's all about cleanliness and adherence to process. It's easy to rebuild a compressor. One job and the tools pay for themselves.

echo419 · 03-09-2022, 04:43 PM

ran the system check and I got "25". Looking it up now.

Ultramaroon · 03-09-2022, 04:49 PM

Quote:

Originally Posted by echo419

ran the system check and I got "25". Looking it up now.

Solar sensor. I had to replace that on my wife's Camry. Had to take the whole dash off to get to it.

echo419 · 03-09-2022, 05:11 PM

NVM, it looks like 25 can display if the area is dark. I'm getting 20 and if what I'm reading is right that's supposed to mean no problem....

humfrz · 03-09-2022, 05:15 PM

Quote:

Originally Posted by Ultramaroon

Sure it is! I have a vacuum pump and reclamation stuff. It's all about cleanliness and adherence to process. It's easy to rebuild a compressor. One job and the tools pay for themselves.

Maybe so. But, all I know, back in the day, it was easier to fix a faulty car AC - just add more ice -

soundman98 · 03-09-2022, 05:46 PM

Quote:

Originally Posted by Ultramaroon

Sure it is! I have a vacuum pump and reclamation stuff. It's all about cleanliness and adherence to process. It's easy to rebuild a compressor. One job and the tools pay for themselves.

cheaper than paying my brother a beer and a few slices of pizza? i doubt it.

Ultramaroon · 03-09-2022, 06:16 PM

Quote:

Originally Posted by soundman98

cheaper than paying my brother a beer and a few slices of pizza? i doubt it.

Well... there's that, I guess.

Ultramaroon · 03-09-2022, 06:33 PM

Quote:

Originally Posted by echo419

NVM, it looks like 25 can display if the area is dark. I'm getting 20 and if what I'm reading is right that's supposed to mean no problem....

The service manifold and gauge kit can be rented but the Harbor Freight version is perfectly ok. Can't beat it for 60 bucks.
https://www.harborfreight.com/automo...set-58776.html

Blackmetal · 03-11-2022, 05:50 AM

Hey bro , let me give you a few words of advice .im a ASE MASTER TECH and TOYOTA MASTER TECH for nearly three decades . DTC 25 is stored unless you are in DIRECT sunlight (sun load sensor ) . DTC 20 simply indicates diagnostic check is completed . You won't find a DTC for compressor operation as that HVAC Check is intended to start diagnosis of air distribution ,recirculation, auto functions and blend mechanisms . So try this -

1) gauges are preferred but in a pinch you can put some gloves on and safety glasses ...take off either service cap ....using a golf tee or chopstick or similar item carefully and quickly depress the schraeder valve in the center of service port ....if you get ANY blast of pressure ,this would indicate enough refrigerant to close low pressure switch and your system is "full enough" to allow compressor operation . IF NOT - as in almost no pressure - your system is empty and you need to find the leak source . Look for oily dust around components in AC system including hose crimps and all components ( refrigerant carries oil within the system so when it leaks it's usually fairly easy to inspect visually since you probably don't have an electronic leak detector or black light )

Low system pressure will not allow compressor operation by opening the relay control circuit to ground.

2) using a test light hooked to a solid ground or negative battery terminal , probe compressor mag clutch power feed wire when AC is switched on and blower is operating - if you have 11 volts or above , then the problem is compressor clutch field coil ( which I would suggest complete compressor Assy)

3) if no power on feed wire to mag clutch under same conditions as above - you would move over to the AC mag clutch relay underhood and tap on it , squeeze it ,etc. ( AC SWITCHED ON ) . If it engages , the relay has failed which is fairly common .

4) also at that time , find another relay in the box like horn or cooling fan that is the same style and swap them .if compressor operates go buy a new relay ( make sure you get dealer or at least DENSO)

Get that far and let me know , I'll do the best I can to guide you thru remotely .

Teseo · 03-11-2022, 07:33 AM

I had the same symptoms, o rings lines was replaced.

echo419 · 03-11-2022, 07:59 AM

@ Blackmetal. Thanks, I'll check it out this weekend. I found that note in the service manual about the 25 code and it did go away when I pulled the car outside.

I'll try and locate #1 and #2 this weekend.

echo419 · 03-14-2022, 01:39 PM

There's a hole in the actual compressor. But good news is I got a build date of April 24th so I'll have it by April 1st and I won't be worrying about this.

p1l0t · 03-14-2022, 03:00 PM

Quote:

Originally Posted by echo419

There's a hole in the actual compressor. But good news is I got a build date of April 24th so I'll have it by April 1st and I won't be worrying about this.

Well that's probably the problem right there!

Sent from my SM-G975U using Tapatalk

echo419 · 03-14-2022, 04:28 PM

Quote:

Originally Posted by p1l0t

Well that's probably the problem right there!

Sent from my SM-G975U using Tapatalk

Someone else's problem in a few weeks.

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03-09-2022, 04:43 PM	#16
echo419 Senior Member Join Date: Aug 2014 Drives: 2014 BRZ Limited Location: Atlanta Posts: 3,150 Thanks: 4,291 Thanked 4,057 Times in 1,879 Posts Mentioned: 29 Post(s) Tagged: 5 Thread(s)	ran the system check and I got "25". Looking it up now.

03-09-2022, 05:11 PM	#18
echo419 Senior Member Join Date: Aug 2014 Drives: 2014 BRZ Limited Location: Atlanta Posts: 3,150 Thanks: 4,291 Thanked 4,057 Times in 1,879 Posts Mentioned: 29 Post(s) Tagged: 5 Thread(s)	NVM, it looks like 25 can display if the area is dark. I'm getting 20 and if what I'm reading is right that's supposed to mean no problem....

03-11-2022, 05:50 AM	#23
Blackmetal Junior Member Join Date: Jan 2022 Drives: 2019 toyota 86 TRD SE 6MT Location: Vista , CA. Posts: 1 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hey bro , let me give you a few words of advice .im a ASE MASTER TECH and TOYOTA MASTER TECH for nearly three decades . DTC 25 is stored unless you are in DIRECT sunlight (sun load sensor ) . DTC 20 simply indicates diagnostic check is completed . You won't find a DTC for compressor operation as that HVAC Check is intended to start diagnosis of air distribution ,recirculation, auto functions and blend mechanisms . So try this - 1) gauges are preferred but in a pinch you can put some gloves on and safety glasses ...take off either service cap ....using a golf tee or chopstick or similar item carefully and quickly depress the schraeder valve in the center of service port ....if you get ANY blast of pressure ,this would indicate enough refrigerant to close low pressure switch and your system is "full enough" to allow compressor operation . IF NOT - as in almost no pressure - your system is empty and you need to find the leak source . Look for oily dust around components in AC system including hose crimps and all components ( refrigerant carries oil within the system so when it leaks it's usually fairly easy to inspect visually since you probably don't have an electronic leak detector or black light ) Low system pressure will not allow compressor operation by opening the relay control circuit to ground. 2) using a test light hooked to a solid ground or negative battery terminal , probe compressor mag clutch power feed wire when AC is switched on and blower is operating - if you have 11 volts or above , then the problem is compressor clutch field coil ( which I would suggest complete compressor Assy) 3) if no power on feed wire to mag clutch under same conditions as above - you would move over to the AC mag clutch relay underhood and tap on it , squeeze it ,etc. ( AC SWITCHED ON ) . If it engages , the relay has failed which is fairly common . 4) also at that time , find another relay in the box like horn or cooling fan that is the same style and swap them .if compressor operates go buy a new relay ( make sure you get dealer or at least DENSO) Get that far and let me know , I'll do the best I can to guide you thru remotely .

03-11-2022, 07:33 AM	#24
Teseo Senior Member Join Date: Jun 2014 Drives: frs Location: Gunsai Posts: 4,954 Thanks: 7,467 Thanked 2,980 Times in 1,802 Posts Mentioned: 23 Post(s) Tagged: 2 Thread(s)	I had the same symptoms, o rings lines was replaced.

03-11-2022, 07:59 AM	#25
echo419 Senior Member Join Date: Aug 2014 Drives: 2014 BRZ Limited Location: Atlanta Posts: 3,150 Thanks: 4,291 Thanked 4,057 Times in 1,879 Posts Mentioned: 29 Post(s) Tagged: 5 Thread(s)	@ Blackmetal. Thanks, I'll check it out this weekend. I found that note in the service manual about the 25 code and it did go away when I pulled the car outside. I'll try and locate #1 and #2 this weekend.

03-14-2022, 01:39 PM	#26
echo419 Senior Member Join Date: Aug 2014 Drives: 2014 BRZ Limited Location: Atlanta Posts: 3,150 Thanks: 4,291 Thanked 4,057 Times in 1,879 Posts Mentioned: 29 Post(s) Tagged: 5 Thread(s)	There's a hole in the actual compressor. But good news is I got a build date of April 24th so I'll have it by April 1st and I won't be worrying about this.

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