Alternator decoupler pulley question
#1
Driver School Candidate
Thread Starter
Alternator decoupler pulley question
I have a 2012 f-sport is350, and currently having the "chirping" sound coming from the pulley. I read a few threads on here claiming that if we removed the cap on it, we should be able to see some rust build up (https://www.clublexus.com/forums/is-...g-noise-2.html)
When I removed the lid from the pulley, I see tons of grease / gunk build up inside of it. I'm not sure if this is normal? Most pulleys I've seen are pretty clean. Correct me if I'm wrong.
When I removed the lid from the pulley, I see tons of grease / gunk build up inside of it. I'm not sure if this is normal? Most pulleys I've seen are pretty clean. Correct me if I'm wrong.
#2
Driver School Candidate
Thread Starter
Here's the actual video of the sound. Drove it around for about a 2-3 miles at around 50-70 mph and sound still sounds pretty bad. It just seemed to get worse after I opened up the cap and cleaned it out.
#3
I replaced the pulley on my IS350, just buy the Lisle 57650 alternator tool on amazon and get a new pulley with it. It wasn't hard to do if you can turn a wrench. Got rid of the chirping noise for me, all quiet now!
#4
Driver School Candidate
Thread Starter
Got it. That was going to be my next steps. Could i replace the pulley with the alternator still intact? Or would i need to remove the entire thing in order to disassemble the pulley.
#5
Hopefully you're still active. Did you end up removal the whole alternator for this job ? Ordered but hopefully don't need to rip it out
#6
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MikesLexo (05-08-23)
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#8
Last edited by MikesLexo; 05-15-23 at 04:37 PM.
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