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What is the cracking sound when I accelerate?

(2002 Lexus RX300)
in Stafford, TX on April 08, 2013
I drive a 2002 Lexus RX300 and I hear a "cracking" sound when I accelerate. What could be causing this?
Displaying 1 answers & 1 comments
Popular Answer
on April 09, 2013
exhaust leak. I would guess exhaust manifold has a crack
on April 09, 2013
Thank you! Could a bad O2 sensor cause that as well?
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