NissanForums.com :: Nissan Forum - View Single Post - How to isolate idler pulley or alternator pulley squeal?

alkon · Jun 20th, 2005, 02:13 PM

I am trying to isolate an intermittent squeal from my engine area that I hear at startup and then goes away. I recently changed out my water pump so I know it is not that. I have tightened by belts so I know its not that. So, I figure it has to be the alternator or the idler pulley. Though I have tried putting my ear as close to both units as I can (without losing it), I cannot isolate which of the two it is coming from. I was thinking of just changing out my idler pulley, but I found out that it costs about $80 (ouch!). Therefore, I want to know which is the problem unit before I spend my hard earned money. Any suggestions?

Jun 20th, 2005, 02:13 PM	#1 (permalink)
alkon Nissan Enthusiast Join Date: Jan 2005 Posts: 29	How to isolate idler pulley or alternator pulley squeal? I am trying to isolate an intermittent squeal from my engine area that I hear at startup and then goes away. I recently changed out my water pump so I know it is not that. I have tightened by belts so I know its not that. So, I figure it has to be the alternator or the idler pulley. Though I have tried putting my ear as close to both units as I can (without losing it), I cannot isolate which of the two it is coming from. I was thinking of just changing out my idler pulley, but I found out that it costs about $80 (ouch!). Therefore, I want to know which is the problem unit before I spend my hard earned money. Any suggestions?