Question about 1995 Pontiac Grand Am

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My 1995 Grand Am 2.3 DOHC has ABS brakes and the front left wheel doesn't fully release after applying brakes, car shakes due to warping rotor. Caliper and rotor replaced, brakes blead, same probl

I bought this car new, ABS light came on about three years ago at 120000 miles. Left caliper began to hang up so I replaced both and rear wheel cyls at the same time. two years later same thing started to happen with the left front caliper hanging up so I replaced just that one caliper. No change in the problem so I went to the junk yard and bought another master cyl with all ABS mechanism attached. Installed it and blead it and the entire system. I have the same results , left front wheel not fully releasing after brakes have been applied. Can I use an after market or an older power brake master cylinder that doesn't have ABS and make it work? I don't have a working ABS system as it is.

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emissionwiz
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SOURCE: caliper is sticking

the ABS valve in the ABS hydraulic control unit is leaking pressure and causing brake to apply is the most likely thing wrong..

Posted on May 16, 2009

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5 Answers

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!

Jun 24, 2014 | 1995 GMC Jimmy

1 Answer

Front tire shakes when stepping on brake pedal


Front brake rotors can warp in heavy use. When it becomes warped it'll cause the steering wheel to shake when brakes are applied.-----------------------------------------------------------------------------
Tacho Pro 2008

Feb 20, 2013 | 2003 Mercury Mountaineer

1 Answer

My 2002 Toyota Avalon is shaking when I apply the brakes. I have replaced the front and rear brake pads and the front rotors with Raybestos ones. It still shakes. Could the rear rotors be warped?


That's what I would imagine. It is usually the front rotors that warp due to the fact that they work a little harder than the rears. However, rear rotors can warp. If you feel the shake more in the body of the car, so in the seat and you feel like the whole car is moving and the steering wheel stays mostly calm then I would imagine the rear rotors are warped. However if the shaking is felt mostly in the brake pedal and the steering wheel shakes too then it is probably your front rotors. Shops can usually resurface rotors and it may be cheaper than buying new, so that could be an option for you.

Apr 08, 2011 | 2002 Toyota Avalon

4 Answers

Steering wheel shakes at high speed when brakes are applied


This is caused by the front disk brake rotors being warped from heat and running out of true, the wobble of the warped rotors causes the wheel to shake when you apply the brakes, it is worse the higher the speed you apply them at. Have the front rotors machined flat again or just replace them.

Mar 16, 2011 | 1998 Toyota Camry

1 Answer

Shaking front wheel when braking. Mecury Sable 2001 front wheel drive


If the front wheel shakes only when you apply the brakes, the most likely cause is a warped brake rotor. The rotor can be "turned" to make it flat and true again, but it will most likely warp again since it will be thinner and it gets hot when you apply the brakes. I normaly replace them and they are about $35.00.

Jan 31, 2011 | 2001 Mercury Sable

2 Answers

1995 Ford Taurus shaking when hitting the brakes


sounds like spindle/axle may be bent!

Oct 04, 2009 | 1995 Ford Taurus

1 Answer

Steering wheel vibrates when i apply brakes


you have warped frt disc rotors replace them and the brake pads!

Jun 30, 2009 | 1995 GMC Sierra C1500

2 Answers

Shake in steering wheel


I believe you need your disk brake rotors turned to be true again or have them replaced. Whe you use your brakes a lot and kit puddles of cold water then it will warp the rotors which will cause the violent shaking. You may not feel it in the brake pedal even if it is warped rotors. If you don't think you have warped rotors then you should be very careful driving it because it will probably be in the steering sector arm or the idler arm on the steering shaft.
Dale

Jan 04, 2009 | 2006 Nissan Xterra

3 Answers

When appling brakes on a 2000 Jeep Grand Cherokee, steeing wheel


New revised calipers. and have the new rotors machined right out of the box before installing

Dec 28, 2008 | 2000 Jeep Grand Cherokee

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