Damn tensioner pulley again after 10k miles

[rainking1978]

I have a 2003 Corolla that was rattling when the engine was cold. I replaced the tensioner pulley about 10k miles ago. Problem solved. Rattling was gone. I believe I used a denso brand and even replaced the belt. Again, I only replaced the pulley. Now the rattling is back. I've heard somewhere here that Toyota redesigned the tensioner all together? Should I purchase a newer tensioner from the dealer say maybe for an 07 Corolla and install that instead of just replacing the pulley again? This thing rattles like sob when it's cold and backing out of the drive way. Any input would be appreciated.

[JasonA]

Yes, the entire tensioner assembly was redesigned. Some folks have had luck in taking the tensioner "shock" apart and lubing that, to quiet the noise.

[balbrec2]

My 07 with 48k miles has started a squealing noise coming from the belt side of the engine.
I'm pretty sure it is either the belt or the tensioner. How do I determine which it is ?
The belt looks almost like new no cracks, no noticeable wear.
When I spray belt dressing on the rib side of the belt it quiets down but comes back after a while.


balbrec2

[lee777]

Originally Posted by balbrec2

My 07 with 48k miles has started a squealing noise coming from the belt side of the engine.
I'm pretty sure it is either the belt or the tensioner. How do I determine which it is ?
The belt looks almost like new no cracks, no noticeable wear.
When I spray belt dressing on the rib side of the belt it quiets down but comes back after a while.


balbrec2

A pulley, likely the tensioner, is misaligned, causing side slippage. The belt is probably developing a glaze from this rubbing. Eye the belt and pulleys closely from the front of the hood, you will probably be able to spot the out of line pulley...the belt will run to one side.