93 4runner

1993 TOYOTA 4RUNNER
240,000 MILES • 6 CYL • 4WD • MANUAL
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ZORBURG
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I have a 93 4runner and it has started making a rumbling sound under the passenger. Happens more often when cold and when pull over it stops Both tranny and transfer case has been serviced and found to be in good shape. Please help
Dec 4, 2010 at 4:48 PM
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KHLOW2008
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When does the rumbling noise occurs?
Does it change with vehice speed?
Are any vibrations felt?
Any engine performance issues?
Dec 4, 2010 at 6:14 PM
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ZORBURG
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The rumbling noise happens at random times. The sound does not seem to change with speed. It happens more often in the morning when its colder in the after noon evening it occurs less.
Dec 5, 2010 at 12:13 AM
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KHLOW2008
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Noises that occurs only when vehicle is in motion and not speed related are mostly from the suspension.

With vehicle on a level surface and handbrakes off, rock the vehicle gently to test if you are able to simulate the noise. If yes, then it should be a dry or bad ball joint.
Dec 5, 2010 at 3:42 AM
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ZORBURG
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I did that,I got no sound.Not sure what it could be.:(
Dec 7, 2010 at 2:40 AM
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KHLOW2008
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Noise are never easy to detect unless they are there all the time so it is not surprising you are not able to detect it. Try with steering in various angle of turning to see if the noise appears. If yes, it would confirm it to be from the ball joints.
Dec 7, 2010 at 12:40 PM