I posted here a couple days ago about my 2000 Beetle 1.8t with 70 k miles puttering like a diesel. I took it to the dealer and they were too booked up to take me until next week but by the sound they guessed it to be something loose, vibrating. I then took it to a VW tuner shop and he told me it sounded like the timing belt and to turn it off immediately because it might go at any time. It turned out to be a failed timing belt bearing and it was causing the timing belt to fray. I was really lucky that the timing belt didn't break because it was about to go!
The strange thing is, I had the water pump replaced under warranty about
5000 miles ago in Sept. at the dealer and they said the timing belt was still in good shape. The VW tuner guy, who just replaced the timing belt, said that the dealer should have recommended that I replace the timing belt when they replaced the water pump, since they have to take the timing belt off to replace the pump. They never did this! I'm the one who asked how my timing belt looked. The only recommendations they gave me was my front brake pads were getting low and they recommended the 60,000 mile service. Of course, when I called them today to ask about this, they claim they did recommend the timing belt change and I denied it. My invoice only indicates the recommendation for new front brakes and the 60,000 mile service which it says were declined.Could the dealer have done something to cause the bearing failure when they replaced the water pump? The VW tuner guy said it's the first one he's ever seen.