Amazon Cyber Monday 2020
IPD sale XeMODeX - Experts in Volvo Electronics

Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!

Recharging A/C... fan not coming on

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

User avatar
bmdubya1198
Posts: 4495
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 49 times
Been thanked: 195 times

Re: Recharging A/C... fan not coming on

Post by bmdubya1198 »

Ah, that makes since. Figures, I only grabbed the high pressure switch from the 850 before sending it off yesterday. Oh well, not like I don't make 2 weekly trips to the junkyard!
'00 V70R Venetian Red/Charcoal M56 Swapped 200k
'03 S60 2.4T Silver/Black 118k
'07 XC90 V8 AWD Sport Titanium Grey/Black 174k
'91 944 Turbo Dark Green/Beige 175k
'92 245 Base White/Beige 249k
'98 V70 GLT Black/Beige 205k
'99 BMW 528i
'01 Mountaineer 5.0
Sold-
2000 S70 GLT Mystic Silver/Taupe 253k
1993 944 Base Beige/Beige 221k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k
User avatar
chrafael
Posts: 96
Joined: Sun Feb 16, 2014 8:39 am
Year and Model: 1998 v70 GLT
Location: Mandeville, La.
Been thanked: 1 time

Re: Recharging A/C... fan not coming on

Post by chrafael »

The problem is that the newer cans of R134 have a valve in the top just like a can of spray paint. You need a new adapter for your charge hose. I had the same problem recently with my old hoses. It doesn't matter how tightly you screw it on the can, it just won't work.
User avatar
RickHaleParker
Posts: 4976
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 632 times

Re: Recharging A/C... fan not coming on

Post by RickHaleParker »

chrafael wrote: Tue May 21, 2019 7:47 am The problem is that the newer cans of R134 have a valve in the top just like a can of spray paint. You need a new adapter for your charge hose.
NAA, need to learn how to tell the difference at sight, then do not by the fix for something that is not broken.
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD.
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
xHeart
Posts: 2825
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 27 times
Been thanked: 47 times

Re: Recharging A/C... fan not coming on

Post by xHeart »

wizechatmgr wrote: Mon May 20, 2019 2:53 pm
abscate wrote: Mon May 20, 2019 2:33 pm Yes, your 1997 has the switch in series with the clutch voltage commanded by the ECC control unit. If you jump that switch with wire with AC commanded on, it will engage the compressor clutch.

The most common point of failure is the evap core inside the climate unit - dash has to come out to fix.
Expect a full two days to do that core swap unless you want to kill yourself.
I'll jump the low pressure switch #45 with a paper clip before starting engine/AC. Do I remove the zip tie at the compressor clutch?
--
Golden Retriever | 2014D VIDA DiCE | 2020 V60CC | 2013A XC90 +150mi/241km | 2001 V70XC +200mi/322km | 1997 Volvo 850 +180mi/289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240
User avatar
abscate
MVS Moderator
Posts: 23255
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 414 times
Been thanked: 1276 times

Re: Recharging A/C... fan not coming on

Post by abscate »

Leave it for now. Get that compressor good and hot then check the clutch clearance for minimum.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
User avatar
wizechatmgr
Posts: 1403
Joined: Thu Jan 12, 2017 1:07 pm
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
Has thanked: 25 times
Been thanked: 67 times
Contact:

Re: Recharging A/C... fan not coming on

Post by wizechatmgr »

Nope, leave the zip tie in, it isn't the cause of the issue...
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD - ~193k miles
xHeart
Posts: 2825
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 27 times
Been thanked: 47 times

Re: Recharging A/C... fan not coming on

Post by xHeart »

Jump method (paper clip) at the low pressure switch #45 worked. The compressor clutch engages when blower fan slider is moved to max -- climate control is MCC.

Local O'Reilly offers rental for manifold and vacuum pump. I'll ask for a 2 stage vacuum pump.
--
Golden Retriever | 2014D VIDA DiCE | 2020 V60CC | 2013A XC90 +150mi/241km | 2001 V70XC +200mi/322km | 1997 Volvo 850 +180mi/289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240
xHeart
Posts: 2825
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 27 times
Been thanked: 47 times

Re: Recharging A/C... fan not coming on

Post by xHeart »

RickHaleParker wrote: Tue May 21, 2019 11:21 am
chrafael wrote: Tue May 21, 2019 7:47 am The problem is that the newer cans of R134 have a valve in the top just like a can of spray paint. You need a new adapter for your charge hose.
NAA, need to learn how to tell the difference at sight, then do not by the fix for something that is not broken.
I did not find any except newer ones with EPA specified Self-Sealing Valve. I like the option of self-sealing for not worrying about unused leftover freon oil in the can. What adapters are best for reuse and fitting the charge hose (yellow line at the manifold)?
--
Golden Retriever | 2014D VIDA DiCE | 2020 V60CC | 2013A XC90 +150mi/241km | 2001 V70XC +200mi/322km | 1997 Volvo 850 +180mi/289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240
User avatar
bmdubya1198
Posts: 4495
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 49 times
Been thanked: 195 times

Re: Recharging A/C... fan not coming on

Post by bmdubya1198 »

I just picked up this adapter from AutoZone yesterday, this is what you need to use an old style valve on the new self-sealing cans: https://www.autozone.com/test-scan-and- ... 244747_0_0

I did some reading on this yesterday, the EPA mandated this in early 2018. I never noticed, I had some cans I bought last fall that didn't have that. It wasn't until a few months ago that I bought a can with the self-sealing valve. I must say though, it's a great concept. It's always annoying pulling the valve off and the can emptying the little bit of leftover refrigerant. I hate breathing around that stuff, even though it's not nearly as poisonous as they would lead you to believe.
I also grabbed some UV dye, I'm going to charge it with the dye this week and figure out this leak. With the adapter, I should be able to get it to take some refrigerant.

The mid 90s we've had are too hot to not have A/C!
'00 V70R Venetian Red/Charcoal M56 Swapped 200k
'03 S60 2.4T Silver/Black 118k
'07 XC90 V8 AWD Sport Titanium Grey/Black 174k
'91 944 Turbo Dark Green/Beige 175k
'92 245 Base White/Beige 249k
'98 V70 GLT Black/Beige 205k
'99 BMW 528i
'01 Mountaineer 5.0
Sold-
2000 S70 GLT Mystic Silver/Taupe 253k
1993 944 Base Beige/Beige 221k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k
User avatar
erikv11
Posts: 10050
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
Location: Iowa
Has thanked: 124 times
Been thanked: 349 times

Re: Recharging A/C... fan not coming on

Post by erikv11 »

About 10 (?) years ago I tired of buying a can here and there and saw the writing on the wall, bought a 30 lb canister of r134a for $70 at Sam's Club. With this I have serviced many cars and it is still at least half full. I see they've gone up quite a bit and the 2018 EPA regulations have effectively killed that option (but https://www.ebay.com/itm/R-134A-Automot ... SwWXdc3KO1).

If you are messing around much with the AC and especially if on more than one car, just pick up a case of the small cans, save yourself a few bucks and some guesswork (trying to find a reliable source, etc.), e.g. https://www.samsclub.com/sams/johnsen-s ... roduct_1_1.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k
Post Reply
  • Similar Topics
    Replies
    Views
    Last post