Rattle noise on idle and start

2002 FORD EXPLORER
160,000 MILES • 4.0L • 6 CYL • AWD • AUTOMATIC
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STXHAMMER
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I am hearing a rattle on start and idle. Is this the timing belt tension-er I have heard a lot about.

https://vimeo.com/232455544
Sep 5, 2017 at 3:02 AM
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MHPAUTOS
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i would start with an oil pressure test done with a cold engine, watch to see how long the pressure takes to build up and if this coincides with the rattle.
Sep 5, 2017 at 3:23 AM