Ive read on some of these forums that the drive components in an AWD system are built to distribute the drive load evenly and if you remove the rear drive from angle gear the increased load on your FWD drive-line components greatly shortens service life.

Just another idea... with the integrated systems these cars have, if there is high resistance from corrosion in electrical cable components like battery clamps, engine grounds, etc., it could cause components to act strange and then normal, vibration from driving could affect it. it may not be the c...

I've owned this Volvo for almost two years now. Don't wanna drive anything else after a couple of miles in this.