Brake pedal to floor

TCGOLF59

MEMBER
2004 CHEVROLET VENTURE
6 CYL
2WD
AUTOMATIC
27,000 MILES

I was getting a whining noise from front so I changed the wheel bearings. Please note the bearings I purchased are for ABS brake system and I don't have ABS brakes, however when I spoke with a local friend he stated that as long as the bolt pattern was the same there should be no problem with using them as I already had the others off the vehicle when before I noticed they were different. Everything bolted up fine and I test drove the vehicle and all seemed well. Until my wife drove the vehicle and noticed a bad vibration when braking and it would not got away. Then it would, then it would come back. I assumed the problem was a sticking caliper or failing brake line. So I purchased both and replaced both lines and calipers on the front of the vehicle.. After completion I went to bleed the brake lines and the brake pedal went to the floor especially when the vehicle was started. Bled the brakes lines 2-3 more times and never could get pressure at the pedal. I then purchased and put on a new master cylinder and bled the brake lines 2-3 more times. I still have no pressure the the brake pedal. Getting very frustrated.

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good afternoon,

You need to pressure bleed the system for the pedal.

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

Did you bench bleed the master cylinder? If you did not, it will make the bleeding more difficult.

You need to get a pressure bleeder. You can rent one at a parts store. It is where pressurized air is forced into the master so when you open the bleeder, the air will be forced out.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

As far as the brake vibration, that is from a out of round rotor. Replace the pads and rotors and that will go away.

https://www.2carpros.com/articles/how-to-replace-front-brake-pads-and-rotors-fwd

Roy