weird sound from turbo on cold start-up

[boost3d2G]

ok well when i start up my car in the evening after it sittin all day and i start it up to leave for work the turbo spools up and whines for a bit....i know most cars rev high on start up when cold but ive never heard it like this to come from a turbo. my friends scion tc doesnt do it and its turbo'd. and theres also a ticking for about 20 sec as well and thats it. sometimes itll tick if i get on it a bit when the turbo spools to about 2-3 lbs then it stops when i get to 9lbs.

any ideas?

also just a random one.....i just replaced my o2 sensor and my check engine light came on and code said o2 is bad. could it be the plug?

 

[iluvmy4g63]

ticking? that sounds like good old lifter tap from a dsm.....

as far as turbo noise...how many miles on it?
also the distance between the blades and the housing on a turbo is only a few thousands of an inch.
it could be a lil sloppy when cold. then when the car warms the metal exspans and its good again.
if i were you i would start saving for a new turbo just in case.....but. my 14-b did the same thing for over a year before it went up. so don't worry to much ...just be prepaired.

 

[tony203040]

It could be your blades nicking the sides of the housing. Check to see if there's any shaft play. How sure are you that it's coming from the turbo?

 

[boost3d2G]

ya im savin up for a t3/t4 setup right now. already have the turbo itself on order just waitin for enough to get the new intake . and got some other parts on order too. hopein to get my engine management system today or tomorrow. i shipped it to my work to get it 2 days sooner =]

the sound is the turbo itself. i had my roommate start it up while i had my head right by it and it was def comin from the turbo. the ticking was the block so most likely the lifter. typical.
it just has a loud wine for about 5-8 sec and thats about it. then it stops. and after its warmed up it runs like a champ

 

[tjbiker031]

Mine is doing the same thing too with the "whine of death". Congrats, you get to buy a new turbo!

 

[JusMX141]

ok well when i start up my car in the evening after it sittin all day and i start it up to leave for work the turbo spools up and whines for a bit.

The T25's on it's way out, no doubt about it. I take it you haven't checked for shaft play yet?

ya im savin up for a t3/t4 setup right now. already have the turbo itself on order just waitin for enough to get the new intake . and got some other parts on order too. hopein to get my engine management system today or tomorrow. i shipped it to my work to get it 2 days sooner =]

I hope it's not one of those generic Chinese "T3/T4" turbos or you'll be putting another one on in two weeks, and another one two weeks after that.

You should've bought a 16G. No adapting necessary- it'll bolt directly to your stock manifold and use your existing coolant lines- even your existing intake.

 

[boost3d2G]

ya i checked for shaft play. none.
and no its not a generic t3/t4 hhahahah