Belt tensioner spring broken?
After the last A service on my 1998 E320 by the dealer I started hearing this clicking sound from the engine when the engine was "idle" (in park or in D, but no acceleration). So, I took it to the dealer last night and now they are saying that the spring inside the main belt tensioner is broken. The replacement parts and labor are about $450. Is this something that a normal mehanic would be able to replace more economically or is their price reasonable for the job? Any ideas what this part might be?
Thanks!
part $116
http://www.autohausaz.com/search/pro...ner%20Assembly
delivered
diy to r/r on www.benzworld.org w210 diy section
very easy
Order a new belt at the same time the old one probably could use changin



