Car Problem Reports

Toyota 4Runner Failed Timing Chain Guides May Cause Rattling Noise

Toyota 4Runner Problem
10 Reports
Me Too

Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2007

Engines Affected: 3.0L V6, 4.0L V6

Average Mileage: 162,205 mi (150,000 mi - 174,411 mi)


The timing chain can develop a rattling noise caused by failing timing chain guides. This is often due to extended mileage intervals between oil changes that allows the oil to become dirty and abrasive which wears away the timing chain guides until they fail. The timing chain and guides should be inspected at each valve adjustment, otherwise serious engine damage may result.

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