Dec 2005 Grand Vitara. When I turn a tight right I hear a low rumbling noise from the drive train. It goes away when the vehicle is tracking straight. Could this be some problem with the central diff. It also makes a whirring noise most prominent at 6o km/h and remains until I come to a complete stop. It is still under warranty and the dealer states the noise is normal. Funny it hasn’t done it in the first 50,000k’s. Thanks any ideas would be appreciated.
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disable each cylinder one at a time. If the noise goes away it is likely a rod knock and is terminal. A new engine is the only way to resolve. If it does not go away than it is possible it is a wrist pin, also terminal, or in the valve train.
if you think it could be in the valve train try this. Add 1/2 can of seafoam motor tune to the oil. Start the car and let it run. If the noise goes away it was a valve train issue. change the oil and make sure you are keeping up with the proper maintenance for you vehicle.
if the noise continues than i would seek a professional ear to listen to eat and give an opinion.
If the car was recently serviced and they did the diff oils,the wrong oil or a 'friction modifier' was not added.Limited slip diffs need a different oil to other diffs.The noise you hear is the clutch plates inside the diff,shuddering.In a straight line,the noise goes away.Hope this helps
yes low speed whine noise from the center of he vehicle is completely normal every one with the same drive train as your does it. as for jestan flushing the oil will not correct any problems that already exist but it is a good idea to prevent problems from happening