Question about 1999 Lexus RX 300

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Vibration noise through the cab of the car when driving at 30mph. Only accured after replacing spark plugs which i could only do by removing the inlet manifold on a v6 3000cc lexus rx 300. want to no if removing the manifold caused it or its just a co-insidence.

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Sounds like it something loose ,ask a local mechanic for a second opinion

Posted on Sep 15, 2010


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Hi I just bought a new 2017 colorado & installed a new bull canopy to back, now when I drive it over 80kl it sounds like the windows are down, it's too loud in cab. Anything I can do to reduce noise??

wasn't noisy before the canopy but is now indicates too much distance between cab and canopy creating wind turbulence
That turbulence is vibrating the thin cabin metal and that is the amplified noise in the cab
removing the cab lining and fitting self adhering sound deadening material to the panels will help
talk with the shop where you bought the canopy to see if they have a solution to close the canopy to cab gap

Dec 13, 2017 | Cars & Trucks

1 Answer

REPEATLY worn out carrier bearing on my 2001 GMC Sonoma extended cab ( 4.3 , 4speed auto 2wd) what could be the cause of this even after I've had it rebalanced?

  • If the bearing fails and seizes up, the rubber will be torn away from the bearing. The seized bearing can tear away the rubber mount that supports the outside of it allowing the bearing to rotate with the driveshaft. This allows the driveshaft to wobble up and down causing a vibration.
  • The rubber can also deteriorate due to age or contamination with oil. The driveshaft will operate at the wrong angle and vibration or noise will result. The vibration occurs most often during hard acceleration.
  • A worn center support bearing can cause a whining sound that varies with vehicle speed. The noise is constant in pitch, rather than changing or intermittent like U-joint noise.
  • If the truck has been raised , the alignment of the drive shaft will also change, A damaged driveshaft can exhibit a variety of symptoms. A clunk that is heard when the transmission is shifted into gear is the most obvious. You can also encounter unusual noise, roughness, or vibration.
    NOTE The engine, torque converter and driveshaft change in frequency as rpm changes. A rebuilt torque converter is often the cause of a vibration that is rpm-related.

    To help differentiate a potential drivetrain problem from other common sources of noise or vibration, it is important to note the speed and driving conditions at which the problem occurs. Unfortunately, it is often difficult to accurately pinpoint drivetrain problems with only a road test. Expand the undercar investigation by putting the vehicle up on the lift, where it is possible to get a good view of what is going on underneath.

    • Check the companion flange, carrier bearing, pinion shaft seal, and pinion bearing, transmission's extension housing seal and bushing, and the u-joints.
    • Check the driveshaft for runout, or the amount that a part wobbles up and down or side to side when it is in motion.

Sep 23, 2011 | 2001 GMC Sonoma Extended Cab

1 Answer

I have a 2009 nissan altima 2.5 sedan. The car is shaking alot and makes alot of noise to be when driving even under 30mph. The power steering fluid seems to go empty at the end of the day and it turns...

Your car will be working fine, if you ask your mechanic, to make a good tune-up on it.
He should exchange motor oil, check the level of oil at the transmission gears, fluid of brakes, how much the brakes pads and disks are used and windshield anti freez liquid. Don't save on that water is always a risk for corrosion.
If you call his attention towards the leak of the steering fluid, he will have to check that line, looking for loose nuts or broken hoses; replace the hose if needed or the gaskets, checking with the motor running, if the leak is finished.
The vibration may be caused by a deffective operation of the used spark plugs, which increases the consuption of gas, so he has to exchange all plugs and examine the electric wires, looking for false contacts, that cause excess of vibration and failures.
The excess of noise at the car body, may be caused by careless driving on non-paved roads, causing the attachment of metallic parts to became loose, making noise. This will require a different type of technician, able to check the attachment of all metallic parts related to the chassis and tighting the ones which are not solid.
I hope this advice helps you. Good Luck...!

Apr 11, 2011 | Nissan Altima Cars & Trucks

2 Answers


check the #3 spark plug. I have one of these "gems", and my trouble started out similarly. I had the vibration and then an exhaust leak. What it was, is the #3 plug blew out of the motor. The threads, in the head, are too weak to hold the plug in. It is a common (and can be expensive) problem to fix.

Jul 30, 2008 | 1999 Ford F150 Regular Cab

1 Answer

Why does my car vibrate and noisy at red light and stop sign

Maybe it's the transmission itself. check it.

Jun 17, 2008 | 2002 Kia Rio

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