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Eric, Automotive Repair Shop Manager
Category: Car
Satisfied Customers: 31643
Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
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1995 Olds Aurora: brakes..master cylinder, left front caliper, pads

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Hi! I have a new question:
The brakes on my 1995 Olds Aurora do not release completely. I have replaced the master cylinder, left front caliper, pads, and roters, but no luck so far fixing the problem. Any suggestions?
Clare (Customer)



Is it just not releasing on the left front, or all the brakes? does it have ABS?

Customer: replied 7 years ago.
It has ABS and seems to drag on the left most. (It drags maybe a little bit on the right.) The rear brakes don't seem to be affected.



You need to check the flexible brake hoses at the calipers. Over time, moisture in the brake fluid lowers the boiling point of brake fluid. This can cause the interior walls of the rubber brake hoses to collapse. When this occurs, it allows the brake fluid to the calier when the brake pedal is pushed, but prevents the fluid from returning to the master cylinder, thus keeping the brakes engaged.


There is a simple test. Make sure you have a wrench that fits the caliper bleeder screw with you. Take a test drive and when the brakes start locking up, pull over. Open the bleeder screw and allow to bleed for a few seconds and then tighten. Now test drive to see if brakes have release(they will lock again in a few minutes). If they did release, then you just need to replace the hoses.


If they dont release, then you have a problem in the ABS hydraulic unit.

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