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  1. Knocking sound help

    Troubleshooting
    My 01 2.5rs has 150,000 miles I’ve owned it for about a month and half put 400 miles on it and now it’s knocking over 2,000 rpm. It threw me a code for a rough idle and O2 sensor as well. I checked the timing belt tensioner and it’s not that. The sound seems to be coming from the back of the...
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