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TSB Document:

Affected Component: ENGINE AND ENGINE COOLING

Summary
Certain 2020 Model Year Mustang GT500/GT350 Equipped with a 5.2L Engine Secondary Timing Chain Tensioner In some of the affected vehicles, the engines secondary timing chain tensioner may not have been properly activated during assembly, which could result in a timing loss. Timing loss could lead to internal engine damage, a rough running engine, and engine misfires.

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Date Published
APR 26, 2021
NHTSA TSB #
10191520
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