2006 Impreza vibration/rattling noise from underneath at 20002600 RPMs

Tiny
CMERRILL8
  • 2006 SUBARU IMPREZA
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 76,100 MILES

My 2006 subaru impreza is making a strange vibration/rattling noise that seems to be coming from underneath me, and more to the front. I can't physically feel the vibration, just hear it. This noise only happens when I am at 2000 rpms and accelerate up to about 2600 at a nice and steady pace. When I accelerate quickly I get little to no noise at all. The noise sometimes gradually wears off after a couple seconds (if I keep the rpms steady in that range). I've also noticed that it happens when the engine is revving down past the 2500-2000 rpm's range.

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Monday, May 9th, 2011 AT 5:48 PM

3 Replies

Tiny
DOCFIXIT
  • EXPERT
  • 18,990 POSTS

Suspect exhaust is causing noise maybe CAT

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Monday, May 9th, 2011 AT 5:52 PM
Tiny
FIXITMR
  • MEMBER

Probably some exhaust sheilding is making noise. I've run into this quite freqently on many vehicles. They always get louder within a specific rpm range.

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Monday, May 9th, 2011 AT 6:06 PM
Tiny
SIXPACK SUBARU
  • MEMBER

I agree with fixitmr, heat shields are a large problem. And on your model, the cross-over pipe junctions heat shields are known specifically for cracking near the spot-welded nuts on the heat shield itself. Get someone to have a good look at them.A 'fine rusty line' is indicative of a heat shield fracture/crack.

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Monday, June 20th, 2011 AT 1:03 PM

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