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Discussion Starter #1 (Edited)
My '06 OR AT has about 225k miles on it and the timing chain is whining pretty bad. I'm planning on following the directions given here and replace the secondary chain/tensioners. Anything else I should replace while I have everything torn apart? The timing chain how to just talks about replacing the secondary chain. What about the primary chain? Should I do that as well given the high mileage?

I figure I'll also replace the original radiator/hoses, water pump, and drive belt as well. It probably needs spark plugs but I'm not sure I want to tackle that at the same time unless it will make things easier somehow.

In addition to this, I'm getting catalyst efficiency codes thrown on both banks. I'm thinking about going with DT long tubes and B pipes (no emissions testing where I live). I'll probably save that for another day though.

Anything else I should do?
 
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