IPD sale XeMODeX - Experts in Volvo Electronics Volvo modules repair and programming
Please use the MVS Amazon link when you buy anything at all! It helps this site. Thanks very much!

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: 4400
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 45 times
Been thanked: 189 times

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

Post by bmdubya1198 »

Happy it was able to help you out!

If it's nice and cold, I would leave it. The last time my cousin tried to top off his AC, it overcharged and blew a bunch of refrigerant out. Granted this was on his Durango, but regardless of the car I like to play it safe when it comes to AC.
'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
1998 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
abscate
MVS Moderator
Posts: 22936
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 395 times
Been thanked: 1234 times

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

Post by abscate »

Okay , 78-46 is 32F delta. A bit low but if you weren’t holding 1500 rpm or more, recirc on, blower at 3/4 the delta will fall.

Two cans is 680g charge,full is. Usually 750, so it’s a sensitive process to tune the last bit of charge to squeeze out the last bit of performance

Drive it and enjoy it for a bit first.
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
greg850r
Posts: 272
Joined: Thu May 03, 2012 5:06 pm
Year and Model: a long list
Location: Mo
Has thanked: 4 times
Been thanked: 11 times

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

Post by greg850r »

RickHaleParker wrote: Mon May 20, 2019 3:27 pm Just a heads up. I got several cans of R134A from Walmart that will screw on both of my hoses but won't discharge. Even with a leak, he should of been able to feel the can get lighter.
I just returned 2 cans to Walmart for the same reason. I will speculate that the new self sealing top is the problem.
I bought 4 and 2 worked, 2 didn't
05 Cross Country wagon
99 C70 Convertible
96 850R wagon
96 850T wagon
96 850 GLT 5spd N/A sedan
97 850R 5spd sedan
66 GTO 421SD 4spd
67 GTO 455 T400
02 Powerstroke 4x4
85 Yota 4x4
24' 454 Challenger
07 Softail Custom
02 Sportster Custom
Parts cars not included
User avatar
bmdubya1198
Posts: 4400
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 45 times
Been thanked: 189 times

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

Post by bmdubya1198 »

You need the adapter to use those cans. I believe I posted a link a page or two back. https://shop.advanceautoparts.com/p/int ... lsrc=aw.ds

I used one to successfully add R-134A to my car, which promptly escaped through the evaporator core into my cabin. Still smells like refrigerant.
Once I replace that I should finally have AC in my R!
'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
1998 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
abscate
MVS Moderator
Posts: 22936
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 395 times
Been thanked: 1234 times

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

Post by abscate »

You gotta test these systems with vacuum first, BDub.

Im going to be recycled URO parts by the time this is relevant but you and your kids are going to be in a world of hurt if ozone levels get fubarred.

Put vacuum on it, let it sit overnight, and don't charge until it will hold 28 inches vacuum overnight.
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
bmdubya1198
Posts: 4400
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 45 times
Been thanked: 189 times

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

Post by bmdubya1198 »

abscate wrote: Tue Jul 16, 2019 6:48 pm You gotta test these systems with vacuum first, BDub.

Im going to be recycled URO parts by the time this is relevant but you and your kids are going to be in a world of hurt if ozone levels get fubarred.

Put vacuum on it, let it sit overnight, and don't charge until it will hold 28 inches vacuum overnight.
Yeah, I vacuumed it but I wanted to find the leak by adding UV dye. Unfortunately it took down a can before the leak presented itself.

Oh yeah, I’m at a point where I don’t like using many harsh chemicals just to protect my own health. I hope to have a long healthy life ahead of me, and I don’t want to ruin it with brake cleaner fumes (which I probably use way too much) and heavy degreasers, among other things. It’s just a shame safer cleaners like simple green don’t work better. I’d happily pay more for cleaners that actually WORK that are environmentally safe and won’t give you cancer!
That said I definitely don’t want refrigerant leaking in my car or anywhere!
At least it’s not as bad as R-12! Fortunately I’ve never had the pleasure of working with that stuff.
'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
1998 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: 9999
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
Location: Iowa
Has thanked: 119 times
Been thanked: 339 times

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

Post by erikv11 »

Acetone is widely useful and the least offensive/harmful of the organic solvents. Be VERY careful with it around painted surfaces.

r134a is completely odorless, you're smelling the PAG oil.
'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
User avatar
bmdubya1198
Posts: 4400
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 45 times
Been thanked: 189 times

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

Post by bmdubya1198 »

Ah, that's what it is then. It smells like a zoo or some brands of hydrocortisone... disgusting.
'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
1998 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
xHeart
Posts: 2805
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 13XC90/01V70X/97N854
Location: Great Lakes - USA
Has thanked: 26 times
Been thanked: 47 times

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

Post by xHeart »

It's time to check a/c charge. The dynamic reading with warm engine at the lower port is 32psi.

With a/c running, the needle dances between 44 – 28psi with compressor working. Cool air is flowing in from the center vent.

Do you recommend adding little r134?
--
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: 22936
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 395 times
Been thanked: 1234 times

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

Post by abscate »

1500 rpm
Recirc on
Blower at 3/4
15 minutes

See how much colder than ambient temp you get

30 good
35 excellent
40 outstanding
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
Post Reply
  • Similar Topics
    Replies
    Views
    Last post