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$10,000 S80 Challenge

Help, Advice, Owners' Discussion and DIY Tutorials on the third generation Volvo V70 wagon and XC70 crossover, and second generation S80. Are you an owner? Prospective owner? Get in here and join us! Start a new topic or comment on an existing thread.

2008-2016 V70
2008-2016 XC70
2007-2016 S80

User avatar
pgill
Posts: 127
Joined: Mon Aug 27, 2018 5:42 pm
Year and Model: 2010 S80, 2008 LR2
Location: California
Has thanked: 11 times
Been thanked: 18 times
United States of America
pgill

Re: $10,000 S80 Challenge

Post by pgill » Mon May 13, 2019 11:21 am

A few more pictures
IMG_5290.JPG
IMG_5294.JPG
IMG_5296.JPG



User avatar
pgill
Posts: 127
Joined: Mon Aug 27, 2018 5:42 pm
Year and Model: 2010 S80, 2008 LR2
Location: California
Has thanked: 11 times
Been thanked: 18 times
United States of America
pgill

Re: $10,000 S80 Challenge

Post by pgill » Thu May 23, 2019 7:52 pm

All,

Here is my next update.

The air conditioning in my S80 wasn't getting cold enough.

It worked reasonably well at highway speed but not so well sitting at the traffic lights.

I hooked up my gauges to check the pressure and I found the following

AC set to max cooling
Low side pressure - 50 PSI
HIGH side pressure - 100 PSI

I checked my LR2 pressure as a baseline (Same engine and very similar A/C system)
Low side pressure - 40 PSI
High side pressure - 155 PSI

Ambient temperature was about 75 Fahrenheit for both vehicles (tested both within minutes of each other)

Looking at a chart for R134a revealed that my compressor wasn't creating enough pressure.

Unfortunately this means that its time for a new compressor.

I decided to go aftermarket and buy a Valeo unit

I did this because the A/C in my LR2 is still blowing cold and its two years older than the S80 and has similar mileage and it came new with a Valeo unit (Volvo specified a Sanden unit)

I also replace the dryer at the same time (in this case its just a bag of desiccant)
I didn't take any pictures but the desiccant bag is in the condenser and you have to remove the refrigerant and then take out the T-70 Torx plug (The plug is hidden by the radiator cross member so the radiator needs to be supported and the cross-member removed)

Some pictures

Vent gauge showing cooling but not enough (outside temperature was about 75)
IMG_5283.JPG
The new compressor
IMG_5305.JPG
The view from the engine bay with everything removed
IMG_5307.JPG
At the same time that I replaced the compressor I also replaced the overdrive pulley.
I did this because the old overdrive pulley wasn't allowing the one way clutch action.
It was frozen in both directions.

After putting everything back together I did notice that the belt now moves easily in one direction (engine off) and it doesn't move in the other direction.

For the Overdrive pulley I decided to try Professional Parts Sweden (I will post here if it fails)


The old Pulley
IMG_5314.JPG

Box for the new Pulley
IMG_5313.JPG

With everything installed the AC is now very cold.

The Vent temperature gauge is in the shaded region.

And the low side pressure is about 35 PSI and the high side is about 150 PSI

I may need to add a little more refrigerant when it get hot.

Volvo recommends 800 grams

Land Rover recommends 730 grams

I am only running 640 grams right now



Cost

$376.52 Valeo 813271 A/C Compressor
$100.00 Remove old refrigerant
$29.85 New refrigerant
$16.86 GENUINE VOLVO 30776238 Receiver Drier Insert

Total cost for AC repair $523.23


Cost update

$7400 --- Purchase price
$62.53 --- (31401556) --- Booster O-rings
$16.36 --- (AISIN T-IV) --- ATF
$40.35 --- (DENSO 5344) --- Sparkplugs
$00.00 --- Filter housing
$51.47 --- (Mobil 1 0W-40, Oil and Filter)
$58.28 --- (LR006071) --- Thermostat
$00.66 --- (LR001505) O-ring for 30713530
$24.29 --- (30713530) --- Coolant hose
$23.99 --- (31439821) --- Coolant
$22.71 --- (14520, 14526) --- Michelin wipers
$68.85 --- (31272677) --- Oil Filter housing
$18.92 --- (LR006076) --- Idler pulley
$18.92 --- (LR006076) --- Tensioner Pulley
$08.97 --- (PK060473 CONTITECH) --- Aux Belt
$112.70 --- (LR021634) --- Motor Mount
$23.24 --- (30680474) --- Torq Mount
$20.95 --- (31390880) --- Cabin Air Filter
$15.76 --- (UD1306) --- Front Brake Pads (Amazon close out price, typical price is ~$75)
$51.47 --- (Mobil 1 0W-40, Oil and Filter)
$523.23 --- AC repair

Total $8605.23

Remaining budget $1436.35

Take care

Paul



User avatar
pgill
Posts: 127
Joined: Mon Aug 27, 2018 5:42 pm
Year and Model: 2010 S80, 2008 LR2
Location: California
Has thanked: 11 times
Been thanked: 18 times
United States of America
pgill

Re: $10,000 S80 Challenge

Post by pgill » Mon Jul 15, 2019 10:18 am

Latest update,

I forgot to include the cost of the overdrive pulley in my last price update so I am adding it in the update below.

I wanted to share what I found when I replaced the overdrive pulley on my LR2.

Comparing the picture for the S80 (Post Above) to the LR2 shows how clean the LR2 is in this area

This is likely due to the use of synthetic oil since new (Mostly Mobil 1 0W-40)
IMG_5474.JPG

Also because I didn't take a side by side picture of the old part and new part, I am including one here.
IMG_5469.JPG
One last disclosure, the part that I bought is an Overdrive Pulley not a Overdrive Decoupler Pulley.

The difference is that the Decoupler has a spring to dampen the belt movement.

Because the belt tensioner also has a a damper I decide to get the simpler part and see if it lasts longer than the original part.

Note: the part that I bought is also significantly cheaper.

Cost update

$7400 --- Purchase price
$62.53 --- (31401556) --- Booster O-rings
$16.36 --- (AISIN T-IV) --- ATF
$40.35 --- (DENSO 5344) --- Sparkplugs
$00.00 --- Filter housing
$51.47 --- (Mobil 1 0W-40, Oil and Filter)
$58.28 --- (LR006071) --- Thermostat
$00.66 --- (LR001505) O-ring for 30713530
$24.29 --- (30713530) --- Coolant hose
$23.99 --- (31439821) --- Coolant
$22.71 --- (14520, 14526) --- Michelin wipers
$68.85 --- (31272677) --- Oil Filter housing
$18.92 --- (LR006076) --- Idler pulley
$18.92 --- (LR006076) --- Tensioner Pulley
$08.97 --- (PK060473 CONTITECH) --- Aux Belt
$112.70 --- (LR021634) --- Motor Mount
$23.24 --- (30680474) --- Torq Mount
$20.95 --- (31390880) --- Cabin Air Filter
$15.76 --- (UD1306) --- Front Brake Pads (Amazon close out price, typical price is ~$75)
$51.47 --- (Mobil 1 0W-40, Oil and Filter)
$523.23 --- AC repair
$43.37 --- Overdrive pulley ProParts Sweden 28436803

Total $8648.60

Remaining budget $1351.4


One more update, I don't get to drive the S80 very often but I did drive it once last week and it is running extremely well. The shifting is smooth and the engine is strong. I like driving it even more now as compared to when I purchased it.

Thanks

Paul
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