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Ideas for nissan problem

1998 Nissan Maxima

Drive Train / Driveline

Making Noise, when driving, always

There is a fairly loud hum or groan that matches vehicle speed. Not noticeable outside the vehicle (driving by). Barely noticeable at 5mph but gets significant at 20mph. In or out of gear doesn't matter, even with engine off (coasting, in neutral). Touching brakes or braking doesn't change the tone, but drone lowers in pitch only because vehicle slows. Turning has no effect either direction, sharply or gradually. Bumps have no effect. Transmission appears to be shifting normally with no slipping. Holding it in each gear has no effect and when using engine braking (2nd and 3rd), does not change tone (except pitch change as vehicle slows).

Wheel does not pull to the right or left while driving/coasting. Brakes do no appear to be dragging, or overheating (Brakes were done about 1 year ago,

10K miles since) Parking brake is not on and cable is not too tight when it is off. Nothing is rubbing on the tires or CV shafts. CVs seem tight with NO noticeable play at all.

This came on fairly suddenly, not built up over time. about 20 miles since and it hasn't gotten worse, yet.

Reply to
maxown
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Bad wheel bearing?

Reply to
David Geesaman

Bad wheel bearing

Reply to
JimV

I agree. Bad wheel bearing. And to find out which side it's on, drive on the highway, about 60 mph, windows closed, radio off, ventilation off. Take a gradual right turn or left. If the sound gets louder/higher as you turn left, it's the left wheel. The right, it's the right wheel. The turns are making the inner wheel spin faster than the outer wheel, therefore the wheel with the bad bearing will be turning faster, and hence humming faster, too.

CD

Reply to
Codifus

Could be the tires have a wierd wear pattern, many people get fooled into thinking it's a wheel bearing when they hear this. If you can tell which end of the car it is, rotate the tires and see if the noise moves. FWD cars do this worse than RWD cars do as the rear tires can get a wierd wear pattern if not rotated real often, like every 7500 miles or so.

Reply to
Steve T

speed.

Could be the tires have a wierd wear pattern, many people get fooled into thinking it's a wheel bearing when they hear this. If you can tell which end of the car it is, rotate the tires and see if the noise moves. FWD cars do this worse than RWD cars do as the rear tires can get a wierd wear pattern if not rotated real often, like every 7500 miles or so.

Reply to
Boots Crofoot

sounds just like a bad bearing.....

Reply to
Bitsbucket

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