this is my buddy's car and he's not the brightest apple when it comes to car, nor is he persistent.

CAN SOMEONE PLEASE help me figure out wtf is wrong with this car??

http://www.youtube.com/watch?v=nEPw78lAPl8

this isn't his exact car, but he said this is the exact noise/problem he is having.

ONLY happens when the car is started in the morning when it is completely cold. and IF you rev the motor then it will go away..

ALSO it will go away when you rev it up..

I dunno anything about FI motors so can someone who does please give me some much needed advice.

I don't want my buddy to fuck his ride up, even if is his fault..

PLEASE... anyone?

 

His car should still be under warranty.

Take it to a dealer.

That engine sounds like it's going to spit something important out the side of it.

 

yea man I told buddy that and he's like I dunno what to do man... fucking goof..

is there anything I should B looking at.

 

It's a chevy

In all seriousness, if someone else is having the same issue on youtube, the dealer has dealt with it before. Tell him to take it in

 

yea I just called him up and told him, next day he's got off work to drive around the DLR till it happens. park the car, leav it running and then pull them fuckers out there

 

If it's under warranty, he should be able to leave the car overnight and get a rental loaner.

Then the next morning they'll start it up and a piston will shoot through his hood.

 

if it's under warranty, don't waste your time

 

 

bent rod or piston slap.

could also be the supercharger fins

 

also, those cobalts have issues with wires melting and grounding out. causing a rough idle

 

When was the last time he changed his oil? And what oil does he use?

 

Sounds like this...

But it's more likely the timing guide and tensioner, a known issue with the Cobalt SS engine.

Why doesn't he get that he needs to take it to a dealer ASAP? Did he mod it? GM is giving customers holy hell about mods lately....

 

It's Government Motors...the new LADA.

 

Piston slap, maybe, or a bad lifter. I don't think its a bent rod because the noise goes away with higher RPMs

 

he's got a CAI on it right now, and needs to change it back to oem b4 taking it in.

I kno, he's been loafting on this for SEVERAL MONTHS now. and even though I told him from what I know, i thought it's timing related or a bent valve, or something to do with the supercharger, which was a guess really, even still he's yet to bring it to them and made a point of making sure it makes that noise....

he's like.. well yo if it breaks, they'll fix it anyways.

I'm laughing at this point and told him that will just make life hell if you do.

So hopefully my word played a roll in changing his mind.

Cause that noise sounds BRUTAL

 

Diesel Cobalt?

Same ol' GM.

 

noise comes and goes... what a piece of shit.

i'm never buying a car designed on this continent.

 

Valve tap? Spun rod bearing?

 

If it goes away when it warms up or when the revs increase, it is definitely NOT a rod/piston/valve problem.

I'm with neuronbob, the dealer should check for that timing guide and tensioner issue first. Past that, maybe the blower lobes are out of spec and hitting the side of the casing. That's a longshot though.

 

^its not an Acura/Honda.. thats what wong with it

 

Does it hold boost fine?

 

supercharger coupler

/endthread

tell him to log onto cobaltss.net

 

http://www.cobaltsuperstore.com/prod...hp?prod=ZZP155

 

great, another fine automobile from GM and they wonder why they have troubles

 

Can he still take it back under the guarantee?

 

Warranty.... Use it or be penniless and rideless....

 

yea the car holds boost fine, and the noise comes when it's cold and is driven for a few miles, then it's ON.

I'm leaning with you guys on the timing issue thing.. cause that noise seems to be coming from the heart of the car, so that'd be a good place to start.

I'm going to keep haggling him to get his ass over there pronto. hopefully it's b4 the problem cause a EAL problem

 

oh yea. and so many hondas and acuras have reliable boosted engines and transmissions

 

x3 on that supercharger coupler.

 

S/C coupler??? can you plz explain. I'm FI challenged

 

This video isn't for a Cobalt, but it will show you what's up.
http://www.youtube.com/watch?v=pSsSctYvOoI

 

junk it

 

yea but does this problem come and go or what?

Cause i've seen the car multiple times and never heard that noise..

However I did notice his supercharger was oddly loud... like a grinding noise actually.

 

thanx for that video tho man!... if that's the problem I'm gonna fix it my damn self..

I fucking HATE WARRANTYs

you gotta convince thedlr it's FUCKED b4 they even consider fixing it.

Unless u know a mechanic there and they'll hook it up, but that's not common for most ppl like my buddy. SOO ballz

Thats why i LOVE N/A

NAALLDAY.... is my lisence plate I WANT :-)

 

I learned something from the video, TheMirror. Thanks!

CL-S, you buddy is silly if he won't go to the dealer. A CAI won't void his warranty and if he's afraid that his dealer is a hardass, and has the know-how to take it off, why doesn't he? That sound would drive me bananas.

 

funny thing is it's driving him mental too.

and he still hasn't gone.. i told him to get his ass there today since he is off... but

think it is safe to say it is the supercharger like that video showed?

cause he brought it in way back when this originated, the dlr said they fixed the issue it was a timing tensioner or something... and then 2 weeks or something it came back.

So maybe that was or wasn't the problem?

I dunno, you tell me.

Assuming you were going to tackle this urself. what would you be look at?

 

no acura comes boosted from factory except the RDX. the Slobalt SS is boosted. the tranny is not the issue on the Slobalt

 

is that schnizzit made out of PLASTIC? no wonder it wears out so quickly..........

 

yes it's plastic.. that's wack.

thank god zz performance makes them OMFG thank god. I hate cheepo dlr replacement parts that'll just crap out again down the road.

i love over engineering.

Hey guys thanks for all this input by the way honestly... if this works my buddy is gonna owe me BIG time. :-)

but you guys got all the credit cause I didn't know shit b4

 

^ charge him $90 an hour like the dealer does.......