The one item you cant check by hand is the tensioner pivot arm that the tensioner spring and damper shock attach to.

It has no bearings, rather a sacrificial sleeve insert that rides the 17mm hex head pin attached through the pivot arm into the timing chain cover.

The sleeve wears out eventually and can squeak; or wobble and cause vibration at the spring/shock. The easiest way to replace it is to pull the radiator. If you have small hands AND dont mind losing some skin IT IS possible to do so by pulling sheet metal crossmemebr and pulling the rad forward and only removing the shroud and fan itself.

Sounds like you need tto pay special attention to your AC clutch.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)