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2002-2005 Range Rover MkIII / L322
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158 Posts
At your mileage I would seriously consider having the timing chain guides and timing chain done. Like most here, I spent a lot of time and money on my RR. The thing ran perfectly, had no leaks of any kind. Then the timing chain guides broke with virtually no warning. I finally threw in the towel after that.
 

· Registered
2002-2005 Range Rover MkIII / L322
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158 Posts
Thanks DDillenger! I have more hope now haha.

rph74's input has me worried - the whole timing chain job is 5-6k - should I really be worried about chain/guides at 142k?

I would really like to think you just had bad luck :(
Well I most certainly had bad luck lol! Until I sold my RR a few months ago I had owned M62 engined vehicles in some fashion since 2003. For years it has been known in the BMW world that timing chain guides were a weak spot. I had never been struck by this issue before. What concerned me most was the lack of warning. I had no rattle at startup, no weird noises, and I even proactively replaced my main timing chain tensioner!

I'm not sure how many others here have been affected. But if you are going to pay to have the upper timing cover gaskets replaced, it is worth considering chain guides as well. My local Indy says to expect 150,000 miles from your timing guides on a M62 as a general rule.
 

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2002-2005 Range Rover MkIII / L322
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158 Posts
Just came across this: http://www.bimmerforums.com/forum/showthread.php?1968769-M62-timing-chain-guide-lifespan

According to this form, they're pushing 200k before timing chain guides. I just did the timing chain tensioner and only have the 1 second rattle on first start up. Going to do the NRV's to see if that quiets it.
Many have stated that the pre Vanos (97-98) M62 timing chain guides last longer. Unfortunately for us, the RR had Vanos only. I hope that my case was just bad luck. I'm sure many out there have higher mileage and no problems, but failure is possible. In a way it makes me prefer timing belts for older vehicles, since they were intended to be replaced at a decent ($1000 or less) cost. I wish I had my guides replaced when the shop did my timing cover gaskets, as I would probably still have my RR.
 
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