Worn Timing Chain Cassettes May Cause Rattling Noise From Engine on Ford Explorer Sport Trac

A rattling noise from the engine may indicate that the timing chain cassette is worn. Our technicians tell us that installing an updated cassette and timing chain tensioner should correct this concern.

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Average mileage: 133,786 (60,000–243,254)
Engines affected: 4.0L V6, 4.0L V6 SOHC, 4.6L V8
7 model years affected: 2001, 2002, 2003, 2004, more2005, 2007, 2008
27 people reported this problem
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Viewing 1 - 14 of 14 problem details
2007 Ford Explorer Sport Trac - 4.0L V6 SOHC 96,500 mi,
Im hearing a rattling noise under the truck and think that it may need a timing chain . I have 96000 miles on truck and its never been changed
Noise from motor, timing chains and guides were bad
2001 Ford Explorer Sport Trac 200,000 mi,
nasty rattle, no obvious source. No check engine light on.
Does my vehicle have timing chain or belt
2002 Ford Explorer Sport Trac 120,000 mi,
A piece of the timing chain cover came up through the valve cover. Truck was still running!!
2001 Ford Explorer Sport Trac 123,000 mi,
timing chain broke causing metal to enter motor. motor blown
2001 Ford Explorer Sport Trac 243,254 mi,
I started it up and it ran for about ten min and then I went to put ot in drive and the engine shut off . I started it back then that's when I heard it clanking or banging of something under the hood up at the front of the motor.
Went through total of 3. yes 3. 2006 it caused a valve to set on top of piston. Got a rebuilt motor it ran 1 year. the only way shop would cover said problem, under warranty. was put on(all) mufflers. 3 catalytic mufflers, do to possible back pressure problems.so here I am with a great truck with bad engineers or money grabbing (?). So next, I hope that show will come that fixes problems with one loved truck. Put a mustang motor, trans & ecu. make my wife her ford adrenaline 2002. Problem FREE
2002 Ford Explorer Sport Trac 168,870 mi,
It pop and put a hole in my valve cover
2003 Ford Explorer Sport Trac 109,000 mi,
It's making a rattle noise & the timing belt was changed a couple days ago but it still makes the rattle noise
2007 Ford Explorer Sport Trac 160,000 mi,
Engine rattles when start up truck.
2004 Ford Explorer Sport Trac 192,000 mi,
timing belt out at 192000 mls. replease timing beltend motor dont rund the same like before
2004 Ford Explorer Sport Trac 108,000 mi,
Non-rythmic rattling behind passenger side valve cover. $3400 just for one side!!!! Plastic parts.
worn cassette, dealership wants over $3000 for repair but are recommending that i buy a new motor from them and they will install it for me for around $4500