Question about 1996 Lexus SC

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Vehicle shakes I own a 1993 lexus 400sc. I believe the right rear brake intermittently grabs,causing the vehicle to shake. This wheel also becomes warm to the touch. Could this be a problem with the abs?

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  • lshead Jul 02, 2008

    I have a 1995 murcery villager the front left wheel is locking up. the abs light did not come the wheel was smoking when I stopped. please help


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I doubt it. You'd have an ABS light on. All wheel are warm to scalding hot after even light driving. ABS systems do not apply brakes. They unapply them. They simply cut the fluid to one of the wheels / axle sets of brakes. (Newer stability control systems use the brakes) In your case. The ABS can deactivate either front wheel independantly, or the both the rear brakes together. You can take the wheel off & flip the pad & piston up to check it if you want, but I wouldn't think it was the brake dragging at the top of my list, no.

Posted on May 14, 2008

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How do you know if a bad alternator is the cause of steering wheel shaking in a 2005 Chrysler Pacigica with only 149k miles?

Very unlikely a bad alternator is going to cause a steering wheel shake even if the alternator is seriously out of balance. In that case a high frequency vibration will run through almost the entire car and the alternator will soon self-destruct.

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The rear wheels and tyres and suspension and brakes are also important for a smooth ride and could conceivably cause a steering wheel shake, though a different sort of shake to that caused by the fronts. In this case the vibration is often felt mostly through the seat of the pants and from the seat back.

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1970 ford f250 shakes real bad when I let off the gas. Any ideas I'm stumped

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Whats happening when 2001 s10 right rear brake grabs first when brakes applied

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Why does it shake whenever i let off the gas and shakes real bad when i apply my brakes

If when applying the brakes the steering wheel shakes then your front rotors are warped and at the least need resurfaced and most likely the brake pads replaced. But more likely the rotors are too thin which has allowed them to overheat and warp which causes the shaking. In this case new rotors and pads are in order. If when braking tou feel the shaking in the seat of your pants then most likely the rear brakes are the issue. Same problem as the front, warpage, but your rear brakes are most likely drums. Again, possible resurfacing and new shoes; but more likely new drums and brake shoes.

But I wonder? Did this vibrating just start all of a sudden or maybe after a near accident requiring you to brake very heavily and possibly overheat the brakes. Or my main concern, to keep this from happening again, after pulling some type of trailer that you intend on pulling again. Pulling a trailer without its own brakes puts a much heavier load on your trucks brakes and just repairing them won't keep it from happening again if you ARE pulling a trailer. Higher quality rotors/pads/drums/ and brake shoes can help but if the trailer is too heavy for the truck nothing but installing brakes on the trailer or a lighter trailer will stop you from warping them again.

Lastly, in general when you let off the gas and the whole vehicle shakes the driveshaft/u-joints are common causes. Same with the steering wheel if it shakes when letting off the gas, but only on a 4x4 or AWD vehicle. So check your driveshafts and u-joints and make sure they are tight. But unless you find something obvious there I would wait until you have the brakes sorted out and see if that doesn't stop all the shaking.

Good luck!

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Check your rear Emergency brake shoes inside the rear rotors. When the brake lining falls off of the metal backing, the linings get ground up inside the rear rotors. The pulverized lining coats the ABS count sensors and the vehicle thinks both rear wheels are turning at different speeds.

That is when automatic anti skid kicks in. The brakes try to stop the spin of the fastest wheel and intermittently applies the brakes.

Remember there are 2 sets of brakes on each rear wheel. The calipers are visible but the drums are concealed as part of the rotor housing.

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