Brake pedal goes floor. Changed brake booster, no change. No visible leaks. Also, bled the brakes. Pulled vacuum hose off brake booster and covered with tape and I get resistance. All new pads on back and front. Confused

David Ferrick

Asked by Nov 15, 2015 at 10:52 PM about the 2002 Pontiac Bonneville SLE

Question type: Maintenance & Repair

Brakes not working good so I changed both front and rear brakes.  It looked
like the rear brakes were doing more.  Even after doing this pedal going to
floor.  Changed brake booster and bled brakes.  Still going to the floor.  No
noticeable leaks from master cylinder.  I pulled vacuum hose from brake
booster and cover it with tape and I get resistance on the pedal.

3 Answers


Try bleeding the system again. Likely you have left air in the lines if you see no leaks. Remember to start with the wheel that is furthest from the cylinder and work to the closest.


There is likely a valve that distributes fluid to the rear vs front brake cylinders or calipers. I would investigate that, after you follow the advice of Taver.


I have had this issue and spent two days bleeding the breaks changing calipers and I also bought a master cylinder. but tried one last thing before I installed it. the brake pads were backwards . not with the wrong side facing rotors but the brake pads that I had on the outside of the rotor needs to go on the inside. never ran across this problem before in my life . but once I switch to brake pads around the car stopped on a dime

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used Bonneville in your area?

CarGurus has 860 nationwide Bonneville listings starting at $1,450.


Search Pontiac Bonneville Questions

Pontiac Bonneville Experts

#1 ticklemedaly
Reputation 350
#2 dandyoun
Reputation 290
#3 John Saffrahn
John Saffrahn
Reputation 280
View All

Related Models For Sale

Used Pontiac Grand Prix"
28 Great Deals out of 4,389 listings starting at $1,972
Used Chevrolet Impala"
931 Great Deals out of 35,797 listings starting at $700
Used Buick Regal"
182 Great Deals out of 10,596 listings starting at $2,195
Used Pontiac Grand Am"
2,008 listings starting at $1,995
Used Chevrolet Monte Carlo"
14 Great Deals out of 2,069 listings starting at $2,000
Used Buick LeSabre"
17 Great Deals out of 2,587 listings starting at $1,450
Used Chevrolet Camaro"
795 Great Deals out of 38,866 listings starting at $2,650
Used Chevrolet Malibu"
1,142 Great Deals out of 72,674 listings starting at $695
Used Pontiac Firebird"
11 Great Deals out of 890 listings starting at $2,900
Used Chevrolet Tahoe"
1,105 Great Deals out of 36,351 listings starting at $1,700