My car makes like a scrapping sound, like hair cutters buzzing, or like metal touching metal- When the car is between 3,000 and 4,000 rpm's and the loudest at 3,500 rpm's. The sound is coming from the passenger's under the hood-motor/tranny and it is heard when ever the rpm's reach that point, whether its in neutral and im revving it or im just driving regular.





Modified by R-81DC2 at 9:05 AM 4/3/2006

 

Im thinking it has something to do with the flywheel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R-81DC2 &raquo;</TD></TR><TR><TD CLASS="quote">Im thinking it has something to do with the flywheel</TD></TR></TABLE>? If you are going to say something like that say why.

Sounds more like heat shield, fairly common problem. The bolts get old and loosen up just a little to cause a vibration, hence metal on metal.

 

It does sound like a heatshield problem... I took all mine off and no more rattles... try it and see if it helps

 

I had the same exact problem at the same rpm....found out that my header-to-cat bolts were a little lose. Tightened those bolts and that loud buzzing/metal to metal noise was gone.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iH8RICERZ &raquo;</TD></TR><TR><TD CLASS="quote">I had the same exact problem at the same rpm....found out that my header-to-cat bolts were a little lose. Tightened those bolts and that loud buzzing/metal to metal noise was gone.</TD></TR></TABLE>

I had the same thing happen to me. I thought is was apexi cat back and was flamming pissed! Then I relized that I was a idot and didn't tighten the bolts

 

My DC4 had that a few months back, a metal rattling sound. Was the heat shield. Tied some metal string around it and it went away.

 

The heat shield for the cat, right?

 

i had the same buzzing, it was the heatshield in front of my block that covers up the header

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R-81DC2 &raquo;</TD></TR><TR><TD CLASS="quote">The heat shield for the cat, right?</TD></TR></TABLE>
yes thats it. i had the same problem.

 

jus finished typing a paper bump