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Discussion Starter · #1 ·
2003 TB 4.2L I6, 190K miles. At idle, using a stethoscope, my deep rattling noise is loudest from the timing chain cover. All accessories and idlers have their unique "normal" sounds, each with a hint of the same sound in the background. It's also quite audible in the engine compartment without a stethoscope, but the source is not clear.
https://soundcloud.com/scmdigital%2F2003-tb-43l-i6-timing-chain
 
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