My alteza always shakes when i apply brakes what can be the problem

SOURCE: Brake? Problem with 01 Saab 9.3

to begin i dont know what it means to say expensive or not how ever, all the lights at the same time could only mean one thing the problem could be in one of the diodes in your alternator is bad thus turning on all the lights on the dash board,

now regarding your brakes especially on saab;s shake or vibration is caused by uneven surface on the brake rotors (usualy the front) my suggestion is to replace the front rotors and the brake pads at the same time.

SOURCE: 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

SOURCE: Car shake when brakes are applied.

the brake rotors are warped...you just need to replace them...

SOURCE: While heavily applying the brakes at high speed the truck shakes.

If the front of the truck is doing all the shaking then the front brakes are doing all the stoppong. You need to check the rear brakes and change if neccessary. If they do not need to be changed then you should adjust them accordingly. I hope this helps. Don.t forget to rate my answer, thanks.

Shannon L Washam

• 169 Answers
• Posted on Sep 24, 2009

SOURCE: Front end shakes when brakes are applied..

Your rotors are warped. When you had your brakes replaced - did they just replace the pads? Did they "turn" the rotors - or replace them? It isn't very expensive to have them turned - which means they will resurface them - removing any high spots. One thing to note - by law, the rotors have to be a specific minimum thickness - if by turning them, they would become too thin - they won't (shouldn't) do it. They will put calipers on them to determine the current, and end result of the thickness and let you know before then actually do the work.

Also - it wouldn't hurt to double check that all of the lug nuts are tightened to 100 ft/lbs on all 4 wheels.

Hope this helps and good luck!