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idler pully/tensioner noise
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=70817		 Page 1 of 1
Author:  goldy9091 [ Thu Sep 13, 2012 11:39 am ]
Post subject:  idler pully/tensioner noise
Gday Gents,

Has anyone had a drama with the above. Mine is making that horrible squeaking/squealling sound when at idle and when you turn it off, i had the serpentine belt changed at last service and made a little difference , but the noise is back better than ever.

Mechanic said they spun/tested the pulleys when the belt was off and couldnt really fault them. I think i will be up for a new tensioner. But way out of my league in doing that myself.

Is this a job that can be done at home or not?

I have a 2003 CRD KJ. Just rolled over 140,000 k's

Let me know what you think or if you can give me a tip.
Steve

:5SHOTS:
Author:  TheJawsOfDeath [ Sun Sep 16, 2012 2:28 pm ]
Post subject:  Re: idler pully/tensioner noise
A great tool to have for this kind of noise is a mechanic's stethoscope. instead of a flat round piece for listening to a person's chest it has a long metal probe that you can touch to things to get an idea of their condition. they are really cheap, too. also the serpentine belt tensioner and idler are pretty inexpensive parts and easy to install yourself.
Author:  TheJawsOfDeath [ Sun Sep 16, 2012 2:31 pm ]
Post subject:  Re: idler pully/tensioner noise
and i see that you have a CRD - I don't remember how much room you have in front of that motor...on the v6 gasser theyre easy.
Author:  Toolmaker [ Tue Sep 18, 2012 8:51 am ]
Post subject:  Re: idler pully/tensioner noise
I had this exact same problem with my CRD last week. It turned out to be a bad decoupler pulley on the alternator. I swapped out the complete alternator for a new (rebuilt) one and the squeaking / jumping tensioner problem went away.
Author:  jkbkwarner [ Tue Sep 18, 2012 12:21 pm ]
Post subject:  Re: idler pully/tensioner noise
I had the noises and it was the decoupler pulley on the alternator. I ordered just the pulley and ended up taking the alternator off and having the stealership remove the decoupler. I didn't have them install the new one, so I could confirm the threading was normal i.e. lefty loosy / righty tighty :P
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