turbo noise posted by z-u-later on June 24, 2008 at 09:00 AM
Message
of the turbos. I thought for sure my passenger side turbo was going out and it turned out to be an alternator bearing. Then recently I thought the driver side turbo was going and it turned out to be the idler pulley/belt adj. on the AC unit. Got 280K miles on the original turbos on my 94TT and they still spool up to full boost.