Chain Sports
Chain Sports
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When should I replace timing chain on a 2001 Ford Explorer Sport Trac?
She has 90,000 miles on her. I've heard that chains do not need to be replaced, but I've also heard they should be. What's the verdict?
1998 through 2001 Ford SOHC 4.0 engines have a problem with their timing belt tensioners. Ford dealers have a kit that is designed to remedy the problem. There must be a lot of people asking for the kit because, when I asked the parts guy for the kit, he didn't even have to look it up in the computer. He just said "aahhh the blue and white box" and went directly to a shelf with a stack of kits on it !! If the tensioner has not been replaced, be sure to change it when the timing chain is replaced. If the tensioner has not been replaced the slack that develops over time will cause a timing chain failure soon.
I learned all this the hard way, mine failed at 112,000 and
caused engine damage!