Dear Paul, the belt is free in one direction but absolutely to much tensioned, the tensioner works at idle is 95% of the total movement it can do ! Anyway i found the solution, the vibration was from the timing chain that was influenced by the belt overtension when AC turns ON and the tensioner is n...

Dear Paul, I've installed the Proparts OAP like yours and even brand new volvo belt/tensioner/idler/water pump etc, but now when i turn on the AC i'm experiencing a very strong ritmical vibration around 1200 RPM only with car in movement, in neutral it disappears, it seems like an old fridge compres...

Thank you very much for helping Paul ! The pulley on my LR2 measure 10.5mm, the same of your measurement, but for some strange reason the pulley on my S80 measure 7.5mm :shock: :shock: :shock: If i try to fit the LR2 pulley on S80 it crash on the timing cover and it can't spin at all. It seems that ...

Dear Paul, Thank you very much for your reply and clarification about OAP vs OAD, now i'll go with the OAP. The matter is that mine 2 engines have from the factory two different pulley, in the FL2 i've found the regular black OAD pulley, in the S80 i find a metal finished OAP, BUT there's a more imp...

Hi Paul, what's your opinion about the overdrive pulley OAP instead of original decoupler ?
I've both FL2 and Volvo S80 with 3.2 engine and for some reason my Volvo comes with a strange unique OAP metal finish pulley with a different offset because of 3mm shorter shaft