high pitch noise at idle - Toyota Yaris Forums

CoryM · 12-19-2012, 10:48 PM

Hard to tell much from the video. Try hitting the exhaust with your hand or a soft mallet. See if you get any rattles. Also while cold, take your finger and pull on the manifold heat shield etc and try to "twang" it like a guitar string to get a noise. Often the best way to find loose heat shields. Just watch for sharp edges.

Other things that come to mind:
-cracked exhaust
-plugged cat or broken baffle in muffler causing intermittent plugging (but would expect to notice this driving, not at idle)

Any other engine problems with the car? Is it stock?

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12-19-2012, 10:48 PM	#11
CoryM Drives: 2009 5-door, 5-speed Join Date: Sep 2011 Location: White Rock BC Posts: 687	Hard to tell much from the video. Try hitting the exhaust with your hand or a soft mallet. See if you get any rattles. Also while cold, take your finger and pull on the manifold heat shield etc and try to "twang" it like a guitar string to get a noise. Often the best way to find loose heat shields. Just watch for sharp edges. Other things that come to mind: -cracked exhaust -plugged cat or broken baffle in muffler causing intermittent plugging (but would expect to notice this driving, not at idle) Any other engine problems with the car? Is it stock?