Stifun Posted December 14, 2013 Share Posted December 14, 2013 My Pathy run's fine and no check engine lights but every time I start it I hear a high pitched noise. I had my friend who knows about car's take a look at it and he thinks its the small pulley next to the A/C Compresssor has bad bearings and it why its making the noise. What do you guy's think. Link to comment Share on other sites More sharing options...
Precise1 Posted December 14, 2013 Share Posted December 14, 2013 Is it a squeal from a belt or a whine that changes somewhat with RPM? Yes, the idler bearings do go bad (it is the tensioner) and they aren't hard to replace. Once nice thing to have is a mechanic's stethescope, it really helps isolate noises and can be bought extremely cheaply. B Link to comment Share on other sites More sharing options...
Kingman Posted December 14, 2013 Share Posted December 14, 2013 Try tightening the belts a bit first. Typically a bad bearing will squeal and grind all the time. Link to comment Share on other sites More sharing options...
Stifun Posted December 14, 2013 Author Share Posted December 14, 2013 Just bought the idler pulley will try and change it this weekend is it pretty straight forward or is there any special instructions or tools needed. Thanks Link to comment Share on other sites More sharing options...
silverton Posted December 14, 2013 Share Posted December 14, 2013 Remove bolts holding it on, replace part, reinstall bolts holding it on. You can take a look in our wonderfully free and available FactoryServiceManual over in the garage section. Link to comment Share on other sites More sharing options...
Stifun Posted December 14, 2013 Author Share Posted December 14, 2013 Thanks will do. Link to comment Share on other sites More sharing options...
ahardb0dy Posted December 14, 2013 Share Posted December 14, 2013 sometimes a belt that is sitting too far down in a pulley will make noise too, so make sure the belts are the correct ones, if the noise does not go away after replacing the pulley. You can also spray plain old water on the belt or pulley to see if the noise goes away. Link to comment Share on other sites More sharing options...
Stifun Posted December 15, 2013 Author Share Posted December 15, 2013 Thanks everyone this Forum makes owning my Classic Pathfinder so so enjoyable as I learn so much from everyone. I am happy to report that the problem is fixed it was the Pulley and my engine bay is so silent now thanks for all the advice and Help. Link to comment Share on other sites More sharing options...
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