hey guys.

when the 12000kms service was due...the service center informed me that the timing belt needed tightening at this point..so they did.
but now i believe the over-tightened the belt and at some random points the rotational motion of the belt makes an annoying sound of an "electric current" something like "bzzZZZzzzz"..get the picture?

anyways...i was wondering how to loosen tighten the belt? i have the timing belt tool and i tried that but i figured out that the tool will only loosen the belt while it is still there and once removed it will tighten it back to its original tension.

can you gurus chime in and help me on this..


thanks in advance

Respect
Moose

 

guys please i need to do this...
this is the only free time i get ... so i can work on my car...BUMP for anyone who knows

 

Hellooooooo???

 

it's a pain in the ***. There is an idler pulley that can be adjusted, as the mounting bolt is an eccentric type bolt, but it is hard to get to. You basically need to follow the timing belt procedure listed in the "How To" section. The accessory belt needs to come off, the timing belt covers need to come off, etc. Once you get it adjusted where you want it, then you'll need a way to lock the pulley in place, because it will most definitely try to rotate and change the belt tension as you try to get it tight again.

 

hmm..thanks for the info

 

Did something change on the IXs ???
AFAIK the timing belt has an auto-tensioner mechanism.
If it is working properly, the timing belt tension is maintained automatically within spec.
There is a eccentric idle pulley on the balance shaft belt, to set the proper tension...

 

He's right ^^.
You basically paid labor for something that they could'nt have done.

At 120km you should have replace the T-belt instead of "tightening" it.
Electric buzzing noise could just be your alternator trying to charge up the Battery to specs.---Normal.
.

 

Yes, we have absolutely no control over the actual tension of the belt (short of mechanically maxing out the hydraulic auto-tensioner). All the eccentric pulley adjusts is the position of the tensioner piston within it's usable range of motion. Similar to trying to adjust AFR in closed loop operation, all you can do is zero the trims so the ECU has full range of motion in both directions.

It's amazing how little the dealer techs know about how this system works. I don't trust them at all with it. I've redone dozens of dealer t-belt jobs done incorrectly over the years.

 

but guys...i was there when they did it...he was adjusting a screw located under the pulley cover (below the cam gears) while i had my thumb on the timming belt..as he turned the screw the timing belt gained tention..


however i noticed one thing...when everything was said and done...the belt felt like it went back to its original tention...but the noise that it was creating before the adjustment dissappeared and was replaced with this electrical buzzing sound...which is not so disturbin to tell you the truth.

thanks for the replies.

Respect,
Moose

 

The only "screw" that could be used is the tensioner tool, which does nothing but compress the autotensioner manually. That would explain why the belt got tighter, but was back to normal when it was done. This guy obviously has no idea what that tool is actually for, and backs up my statement about dealer techs not knowing anything about the timing belt tensioning system on these cars. It's the same system that was used on the DSMs for the last 17 years, which makes it even more alarming...

 

well...good thing is that i did not pay any labor thus i do not feel like a dummy


thanks for the replies boys...gotta love the learning i receive on those boards..better than my undergrad BSCE degree lol


respect
Moose

 

does the timing belt tensioner have a sensor attached to it? The car threw a SES light and it's under warranty so I took it to the dealer with a multiple cylinder misfire and a crankshaft position sensor problem and after leaving it with them almost all day they said that the tensioner was "off" and they are ordering another which will be here on Thurs and they'll have the car to me on Fri because they have to drive it. All work is warranty but I am wondering if it has a sensor to notice crap like that or if these guys like joyriding in my whip. All help is appreciated as always

 

bump

 

hopefully, to clear things up, you guys need to read this "how to"....

https://www.evolutionm.net/forums/sh...d.php?t=191524

There is an idler pulley that needs to be set properly so that the auto tensioner on the timing belt can do it's job. The idler pulley is just like the one on the balance shaft, it has an eccentric hub, and it MUST be set properly so the auto tensioner can hold the proper tension within it's range of motion. Specifically, look at post #4, 5, and 6. These reference the appropriate pages of the service manual.



It would be a mistake to assume the auto tensioner can handle any adjustment necessary, and then ***** nilly install a new timing belt without making sure the idler pulley is set correctly. That's taking a major shortcut that could bite you hard.

 

the timing belt tensioner does not have a sensor.