Please visit this thread where someone else had the same issue as I was having, I went on to resolve my issue. Replaced Timing chain, tensioner and guides but wasn't the issue.Anybody experienced this before? When in Park, the engine idles smoothly with no noticeable noise however, when shifting to Drive it starts clicking/knocking. Could it be timing chain?
It's 07 with 250,000 km.
Did you read through the thread I mentioned?Dealer said there are 2 sources for the rattle - 1) replacement needed for timing chain tensioner and 2) replacement needed for air conditioning compressor.
Apparently, changing the tensioner will significantly reduce the rattle. And was told that I can still run without changing the compressor for now.
Does this make any sense to you?