i just recently heard my timing chain making like a clicking noise while idling. seems to go away when rpm's get higher. just woundering if anyone else has had this problem or something along this line. car goes to dealer tues to be looked at thanks a lot guys!!

 

ya mine is doing that too. I gotta make an appointment to get it in. Let me know how u make out.

 

Are you sure it's the timing chain? My supercharger is making a noise and it almost sounds like someone put marbles inside it. It's only at idle and if I hit the gas it goes away and it only does it randomly. here's a link to the thread I started about it...

https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/supercharger-noise-120357/

Thought it might help you guys out...

By the way in my case if you stand near the headlight on the passenger side of the car the noise gets louder.

 

probably the tensioner like mine

still haven't ordered the part or replaced it...been too busy with work

I have a stage 1 unopened, solid transmission and motor mounts, stage 2 pulley system, and a midlength header + dp combo from zzp just chillin' with no time to install them. Hence the reason I sold my Cobra heat exchanger...NO TIME

 

They are telling me in the other thread that it's the coupler inside the supercharger that mates the snout to the blades inside the blower. Apparently they wear and rattle and cause it to be noisy...

 

Hmm... I would say the noise could be the timing chain tensioner, but it could be the coupler int he SC as well. The SC really starts to get noisy at idle the older it gets.

 

yea mine started at about 10K miles and it's progressively getting worse...

 

timing chain tensioner.

 

Yes, i have had this problem. My tensioner eventually collapsed and GM needed to replace the entire motor.

New motor for me!!

 

i had that same problem for about 3 months and then the bolt holding the tensioner sheered off and fell into my bottom end. i had to replace the motor. i wish i had the warranty cuz i can think of a million better things to buy for 4500 dollars

 

well luckily im still under warr. and its going back tues to be looked at

 

my tensioner, chain, and gears had to be replaced.... it sounded a lot like a diesel at idle.

 

i had the same problem so i tore the engine apart and i found out that my vavles were bent and my number 4 piston was chipped and it was rubbing on the cyinder walls.. not saying this could be yalls problem but it could be