Question about 2000 Jeep Grand Cherokee

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Hard knock sounds like its coming from engine, oil is clean no sign of antifreeze

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Could either be a cracked flywheel or an isolated bearing failure (material failure)...If your oil pressure is normal, likely it is the flywheel but you should have it checked out by someone familiar with that immediately.
Waiting is not an option with any serious noise like that.
Obviously my answer is not a "fix" but you need to know what it is before you can fix it!

Posted on May 05, 2010

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