Question about 2004 Lexus RX 330
This may just be from a muffler starting to fail internally. However a broken exhaust gas recirculation tube is likely to blame for this. This tube will run from the catalytic converter to the engine smog pump or recirculation pump. If this tube has a hole or is broken you may only notice this noise when the EGR valve is open or the Emissions control pump is on.
Posted on Jul 30, 2010
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Posted on Jan 02, 2017
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