Question about 1993 Pontiac Grand Am
I have a 1993 pontiac grand am se with the quad 4 in it.It also has abs brakes ,im having problems with my brakes when the engine is off i have pretty good pressure in my pedel however when i turn on the engine i lose all brake pressure.The car still seems to stop but its not the best braking!I 'm also getting air out of my one back bleeder repeatedly but can not find any place where there is brake fluid leaking! any help or suggestions would be greatly appreciated
Hi, the problem your having sounds like you need the brake servo replacing this is a common problem on all makes of car and the cause is the servo.
The servo is the part under the bonnet that has all the brake pipes going to it and it also goes to your brake pedal these are not that expensive to buy but can be difficult to fit as you have to undo all brake hoses and pipes then when you fit new one you need to make sure the pipes are fitted correct else they will leek and also once the new one is fitted you will need to bleed the whole system at all four wheels to ensure their is no air left in the brake line.
Once this is replaced you should find you have no problems and then your brakes will be as good as new.
The only other problem to cause air in the brakes is if the back brakes are not disk then you need to remove the hub and check the brake cylinder that pushes the shoes onto the hub when braking but if your car has disk brakes on the back as well as front then i would replace the servo.
Hope this is some help to you let me know how you get on or if you have any questions ok
Posted on May 20, 2008
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