Hey guys i've been having a noise that sounds like rattling rocks or beads in can. The noise seems to be happing between 2500-3000, during turbo spool, and goes away as soon as 3250 rpms. Is this normal? I have never owned a turbo charged vehicle before so plz bare with me.

 

Is your car stock?

 

whats done to it? filter? tune? You can be hearing the turbo spooling right before boost!

 

its stock.

 

The noise you describe is generally the noise created by knock. As your car is completely stock, that should not be happening.

What kind of gas are you using? If you're using Diamond Shamrock or any other type of cheap gas, put in some gas from Shell and see if it still does it.

 

i use shell 93, im gonna try a different shell and see if the problem still happens.
wouldn't the knock be thru out the rev range tho?
oh and to clarify the noise is during turbo spool and goes away as soon as it spools up i guess

 

mine does the exact same thing, it only happens when im just cruising around, not when im on it.... never knew what it was...

 

Doubtful that it is knock. What it most likely is is the heatshielding around the turbo rattling because it's loose. There was a thread about this a long time ago, and it's not very common, but it is very easy to fix. Pop your hood, and check the bolts all over the heatshielding, top and bottom, and tighten them if they are loose. Let me know if this fixes the problem.

 

^ answer

 

Im gonna try taking off the heat shield tmw and see if i still have that noise.

 

honestly I heard this noise when I raised boost but you didnt do that...the problem was I was blowing off my upper intercooler pipe at that stepdown **** in the middle of it...and also cause I didnt tighting the upper int. pipe to the turbo outlet hard enough...check those out...probally not but its a idea

 

will do chief