A loose timing chain on early models will produce a rattle (in the front of the engine) because the chain hits the guide. The timing chain should be replaced (the cam sprocket should always be replaced at the same time). Remove and discard the timing chain guide; on later V6 models, the guide has been eliminated.
Average mileage: 196,666 (170,000–220,000)
Engines affected: 3.3L V6, 3.8L V6, V6
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