fenrisx
05-13-2013, 06:24 PM
Time for another round of the ever-so-popular "Guess That Noise!"
In this week's episode my 4Runner is making another weird noise. The noise is similar to that of an exhaust that's dragging the ground, mixed with a metal rattling noise... at least that's what it sounds like from inside the vehicle.
It typically doesn't do it when I start the 4Runner, but as soon as I put it into gear it makes the noise. Upon accelerating it will stop, but sometimes it will still do it depending on speed/rpm. It's not always an exact speed/gear/or RPM, but it does tend to be at spends under 30'ish MPH under light acceleration. Then again the sound of the Borla + wind noise could be drowning it out.
It seems to be coming from the front passenger side area of the 4Runner. My guess is maybe the front catalytic converter kicked the bucket (I've got the 2-cat'd Cali spec 4Runner)..and the innards are rattling around inside of it. I just YouTub'd "catalytic converter rattle" and found a video of a Honda that's making a very similar noise. (http://www.youtube.com/watch?v=_jk48X85LsM skip to the 1 minute mark). My only doubt with this being the cause is the fact it only does it once I've put it into gear.. you'd think it'd do it all the time at idle. Only a very few amount of times has it done it while in neutral.. which has made it difficult to diagnose. However, after watching that video I might try hitting it with my fist to see if I can hear anything inside bouncing around.
Anyone else want to back up my catalytic converter theory? I should try banging on it when I leave work..but I don't want to get my shirt dirty. :0
In this week's episode my 4Runner is making another weird noise. The noise is similar to that of an exhaust that's dragging the ground, mixed with a metal rattling noise... at least that's what it sounds like from inside the vehicle.
It typically doesn't do it when I start the 4Runner, but as soon as I put it into gear it makes the noise. Upon accelerating it will stop, but sometimes it will still do it depending on speed/rpm. It's not always an exact speed/gear/or RPM, but it does tend to be at spends under 30'ish MPH under light acceleration. Then again the sound of the Borla + wind noise could be drowning it out.
It seems to be coming from the front passenger side area of the 4Runner. My guess is maybe the front catalytic converter kicked the bucket (I've got the 2-cat'd Cali spec 4Runner)..and the innards are rattling around inside of it. I just YouTub'd "catalytic converter rattle" and found a video of a Honda that's making a very similar noise. (http://www.youtube.com/watch?v=_jk48X85LsM skip to the 1 minute mark). My only doubt with this being the cause is the fact it only does it once I've put it into gear.. you'd think it'd do it all the time at idle. Only a very few amount of times has it done it while in neutral.. which has made it difficult to diagnose. However, after watching that video I might try hitting it with my fist to see if I can hear anything inside bouncing around.
Anyone else want to back up my catalytic converter theory? I should try banging on it when I leave work..but I don't want to get my shirt dirty. :0