groaning/humming/vibration - front differential?
I have a 2004 V6 Treg 75000k, i have owned it for the past 3 years and it's been just fine apart from the odd little problem here and there.... then the dreaded road noise started about 2000k ago and seems to be getting worse. I have read loads of threads, explaining that it is normally the drive shaft bearings that have gone and that most people change the whole shaft and the problem goes away. So i was ready to expect a $1-2k bill when it went into the dealer this week. The noise is worse than before, starts about 20mph, bad at 60mph, noise gets a little better when i give it slight gas, noise gets worse when i coast down the road.
THE BAD NEWS:: the dealer has told me that the whole front differential needs to be changed and that the noise isn't the drive shafts, and that they see tiny metal shards in the fluid. They are estimating between $5k - $6k. I'm not an expert, and i have tried to research as much as i can, but don't see much info on front diff's apart from people talking about off-roading.
I'd be so greatful if some of you guys that know more out there have any comments, so i can challange the dealer. (is it a long shot to ask VW warranty for help).