chirp/squeak noise just off idle when cold

[tadc]

Originally Posted by RedRide

You must be careful not to over tighten the belt as it could case the altenator, water pump bearings, etc to fail.

Thanks for the replies.
That's what makes me reluctant to tighten it. Also - I'm not too familiar with the Yaris's layout, but isn't this a serp belt with a spring tensioner? If that's the case, there isn't really anything to "tighten", right? The tensioner applies tension and thats that?

Does anybody know off the top of their head what's the service interval for the belt?

Thanks.

[WeeYari]

Originally Posted by tadc

And that's what makes me reluctant to tighten it. Also - I'm not too familiar with the Yaris's layout, but isn't this a serp belt with a spring tensioner? If that's the case, there isn't really anything to "tighten", right? The tensioner applies tension and thats that?

Does anybody know off the top of their head what's the service interval for the belt?

Thanks.

There is no tensioner. The alternator must be moved to adjust tension.

I just checked my recommended maintenance schedule. Through to 232,000 km, it does not show any maintenance items regarding this belt. The only mention is an inspection and adjust tension if needed during every other visit.

[tadc]

Originally Posted by WeeYari

There is no tensioner. The alternator must be moved to adjust tension.

I just checked my recommended maintenance schedule. Through to 232,000 km, it does not show any maintenance items regarding this belt. The only mention is an inspection and adjust tension if needed during every other visit.

Well that is interesting. In light of that I assume I probably need to adjust tension.

It's been a long time since I had to do that... can anybody share their technique? Should I be going for the about 1/2-3/4 inch deflection of the belt?

Also can anybody share the typical lifetime of the belt in their experience?

Or maybe I should just let it go until the belt *really* starts slipping and then just replace it? I really don't want to give the bearings or seals in the alt or water pump an excuse to fail... :)

[DARK AGE 53]

Originally Posted by tadc

Well that is interesting. In light of that I assume I probably need to adjust tension.

It's been a long time since I had to do that... can anybody share their technique? Should I be going for the about 1/2-3/4 inch deflection of the belt?

Also can anybody share the typical lifetime of the belt in their experience?

Or maybe I should just let it go until the belt *really* starts slipping and then just replace it? I really don't want to give the bearings or seals in the alt or water pump an excuse to fail... :)

I don't really think you can say when it's time to change the belt, kinda depends on conditions you drive in.....you could try spraying some soapy water on the belt or use belt dressing to if the belts the problem. Check out CTScott replies number 8 and 15 here http://www.yarisworld.com/forums/sho...t=tighten+belt . Good luck.