My Front Tires Keep Locking up
Asked by AlfonsoRamos11 Apr 30, 2014 at 11:08 PM about the 1994 Nissan Sentra Limited (1994.5)
Question type: Maintenance & Repair
I have changed everything as far as breaking systems go and my wheels continue to lock
up. I have changed calipers, pads, lines, master cylinders, and the front wheels still lock
up. I have no clue what the problem could be. PLEASE HELP
3 Answers
Do you know if it's the brake that actually lock up? It could as well be the hub/bearing assembly or your transmission giving you a hard time. Does it lock up intermittently? How does it feel when it locks up? Can you spin the wheel if you jack the car and put the transmission to Neutral? (Don't forget to activate the hand brake so the car doesn't move) Both wheels are locking?
AlfonsoRamos11 answered 9 years ago
Yes.. Its the brake that actually locks up. No, the brake does not lock up intermittently. After i bleed, (put the '10 wrench to it), the brakes release and the wheels spin. After the brakes release i am able to drive the car for a little while. As i brake the brakes tighten up little by little until they lock and i cant drive the car anymore. And yes. Both wheels are locking up.
We can rule out the master cylinder since you've replaced it. Remains the brake booster and the fluid. If you haven't changed the fluid, it may be contaminated with water and expands with heat. About the brake booster, you need to verify the check valve. It is plugged into the engine with a hose. Here are the instructions: http://www.ehow.com/how_7502988_test-brake-booster-check-valve.html Good luck!
