Hi, I've got a very noisy aux belt on my Astra, after inspection I realized it seems fairly loose. The car has done 169,000 plus miles now.
-the belt has done 19,700k miles, it was a "non original", meaning.. I bought it from a local motor factors shop.
-I had it fitted by a mechanic and within a couple of months it began to make a high pitch noise, but lately is has gotten much worse.
the engine is an X20DTL, 2 liter turbo diesel according to the car's docs, I would appreciate advice as to what to do, whether to replace the belt or not, if it is possible to apply tension to it etc.
I remember the mechanic (Among other things) removed the engine support to replace it, is that correct?
Got some mechanical skills but not an expert, got a decent wrench set.
Thanks in advance.