Question about Jeep Cherokee

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My 2000 Jeep Cherokee Sport started having a rythmic knocking sound while I was towing about 800 pounds on a trailer over the weekend. I hoped it was low on oil, so I added 3 quarts. However, the sound continues. What should I do to diagnose the problem?

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You have not said where the knocking noise was coming from, If you have the usual detachable tow hitch on it, and you do not have enough weight in the trailer on the front end (hitch) then you will have a rythmic knocking sound from the rear. Usually it gets worse when you are in the slow lane of a dual carriage way rather than the fast lane (due to Lorries creating undulations in the tarmac surface.

Posted on Nov 09, 2008

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3 Quarts? If you had to add three quarts you probable burned out your Crank bearings. Make sure you did didn't overfill the oil. Change your oil and add some additive to it. If it still knocks, it's probably your bearing. Pull engine, replace crankshaft and rod/main bearings.

Posted on Sep 17, 2008


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