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While I am in there...

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
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dnwong
Posts: 11
Joined: 23 June 2014
Year and Model: 2008 xc90 3.2
Location: US
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While I am in there...

Post by dnwong »

So, car died and I thought it was the alternator that failed. It turns out that on a 3.2, the coupler bolt that secures the drive sprocket to the engine has come loose. Save me 500 for a new alternator. Loctited the bolt and put the original alternator back.

It was a lot of work getting the intake out so I wanted to see if there was anything else I should address before putting it back together. I see a lot of oil leaking and was wonder where it may be originating from.
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ogatrulle
Posts: 102
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Year and Model: xc90 2008
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Post by ogatrulle »

Could it be the brake booster vacuum pump? Mine started leaking around 120k miles and the oil dripped down around the serpentine belt area forward and rear, and eventually down to the bottom of the transmission and onto the mud shield.

There are rebuild kits available for the vacuum pump. I did mine about a year ago and it was a relatively easy job.
2006 v70 2.5T; 2008 xc90 3.2
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chitownV
Posts: 296
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Year and Model: 2008 XC90 3.2
Location: Maryland
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Post by chitownV »

That does look exactly like a vacuum pump o-ring leak.
2008 XC90 3.2 AWD - 169k miles, Premium, Versatility 7 passenger, Climate, Convenience, retrofit Morimoto D2S HID bi-xenon, iPd swaybars & poly bushing inserts, Powerflex poly control arm bushings, Bilstein Touring Fr struts, Continental CrossContact LX25 255/55R18, Fr Infinity tweeters & speakers, hardwired cheap $17 Bluetooth to center console aux & pwr, CQuartz UK 3.0 ceramic coated, no oil consumption using Mobil 1 0W-40 even w/ my lead foot
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pgill
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Post by pgill »

Thermostat and
small coolant hose with O-ring

https://www.freel2.com/forum/topic32245.html


Overdrive pulley for the alternator

Note: when the overdrive (or clutched pulley if you prefer) fails the bolt on the drive pulley becomes loose

The pulley is like a freewheel on a bicycle, it only engages in one direction

https://www.freel2.com/forum/topic33867.html

You will need a tool to replace the pulley

Good Luck

Paul

PS the Serpentine belt also has a clutched pulley, you should be able to move the belt easily in one direction
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