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A timing chain is not a maintenance item that needs replacing at a set time or mileage. You replace it when a major overhaul is done. It will normally last until that is necessary. If you hear it making noise or the engine performs poorly or you can't keep the engine in time, then it may need replacing.

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โˆ™ 2006-04-25 13:54:53
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Q: How often should you change the timing chain on a 1999 Cougar with a 2.5 V-6 motor?
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