Metallic noise about 3500RPM HELP!

[mattb]

Today I put the window down on my car and as I was passing 3500 RPM a metallic noise started coming from the front driver's side, almost like it was coming from the wheel. The wheel is squeaking anyway, but this scraping doesn't sound good. The car revs strongly and shifts nicely. What can cause this noise? Chain guides maybe? Or is it normal for the SR20DE to sound like that at those rev levels? Until now I've really never taken it up to those levels....

I honestly don't know what it is...there is no slipping of the transmission or hesitation or anything to go along with the noise...I'm really worried about it. It sounds a lot like the metallic noise my rear brakes made when they were totally gone. I think it may have something to do with that....

[mattb]

Okay, it's not the brakes. It feels like it's coming from under the car. A mechanic I talked to said he thought it might be something loose on the exhaust.The car runs and drives great, idles as smoothly as the 04 BMW 530 I drove today. I'm taking it in tomorrow morning....

[lapres3]

ill bet that your hitting the resonating frequency of somthing in the exhaust or on the engine thats making it vibrate... park it and have a friend hover around the car trying to find the source of the noise while you rev.


Unless you trust someone else's foot on your car's gas.....

[g20bitch]

Mine was making noises like that when I was at about 4,000 and higher, it ended up being one of those heat sheilds vibrating like crazy...its gone now

[mattb]

Originally posted by g20bitch
Mine was making noises like that when I was at about 4,000 and higher, it ended up being one of those heat sheilds vibrating like crazy...its gone now

That's what it ended up being on mine too....the whole front section of the exhaust was shot to hell...the flex pipe was all torn. Had it replaced and now the car doesn't rattle, feels better, and sounds better too.