Vibration on deceleration
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Vibration on deceleration
Does any one know what make an LS400 vibrate during deceleration? I have already replaced the engine and trans mounts, also completely rebuilt the front suspension. The car seem to only vibrate when you take your foot off the gas. It does it at any speed and it always does it when decelerating.
It is felt in the steering wheel but a little in the seat as well.
It is felt in the steering wheel but a little in the seat as well.
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Thanks for the ideas timyOtool. What throws me is that it only shakes when you take foot off the gas, and it is in the steering wheel. Do you think a dealer will be able to diagnose? I can't afford to just guess and start putting parts on in hopes of a cure.
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#10
Okay coast in neutral and apply the brake, does that stop it? When torque is removed in drive then it shakes, it then has to be something that torque holds pressure against. That would be rear wheel bearings, the cv shafts, and the driveline other wise known as drive shaft. So the problem is with one of those, you check by getting under the car and jacking the rear wheels off the ground and moving things by hand and turning things by hand looking and feeling. And what timmyOtool says as well.
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It does not shake while accelerating but does shake as soon as gas is let off. Putting it in neutral does not change the feel at al. And the last piece of the puzzle is I just changed both rear axles because old boot were leaking. That is when I noticed the vibration.
#12
If it happened after changing the CV axles then that is the cause of the vibration, pretty simple stuff. Looks like one is bad or both, its pretty hard not to install correctly.
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BNastee (05-30-23)
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Great video. Thanks. It never quite got to the diagnostic part though. I watched all 3 videos in the series. Do you know where I can find 4,5 and 6?