Login Register

3.2L: Power system service urgent and screech

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.
Post Reply
carboncow
Posts: 596
Joined: 11 June 2010
Year and Model: 2003 XC70 2018 S60
Location: Central Ohio

3.2L: Power system service urgent and screech

Post by carboncow »

Helping a friend a few hundred miles away with them. I'm a transplant from the P2 XC70 world but looking into a 3.2L myself, so interested.

She has a 2007 3.2 with 100K miles FWD.

This am 50F and raining she said it lit up with "power system service urgent" message and got a terrible screech sound but went away over 40mph and she said she got to work just fine.

Belt/tensioner?
alternator?
Something else?
Shawn F.

2001 V70 T5
2003 XC70
1996 Vw Passat Tdi
1999 Porsche Boxster
2004 Chevy Suburban LT 5.3L
2013 & 2015 S60 T5
2008 Vw Touareg T2 V6

1989 Sea Ray 340 Sundander
2007 Sea Doo Challenger 180 SE

jimmy57
Posts: 6694
Joined: 12 November 2010
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 4 times
Been thanked: 320 times

Post by jimmy57 »

Loose alt drive cog for the alternator cuff. The alternator driven cog has a one way clutch and it is likely seized or slip then catching and has stressed and loosened the drive cog. The drive cog is a faint interference fit onto a faintly tapered stubby shaft.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post