gusu
10+ Year Contributor
- 1,949
- 32
- Sep 9, 2009
-
Independence,
Oregon
Hey everyone,
I've never experience this and my friend who was an ASE certified Automotive Technician for 10+ years wasn't sure what would be causing this either. So a bit of backstory - I recently started having my front calipers stick after about 90,000 miles on both calipers. I have had 2g front calipers since I traded for my car in 2009 so no recent modifications of any kind, I was just replacing them because they were sticking. Other than the sticking occasionally the brakes worked fantastic and had zero issues.
After replacing the calipers and bleeding the brakes using a single person bleeder doing the standard procedure of rear passenger, rear driver, front passenger, front driver and bleeding until no air came out from 10 turns of the bleeder before going to the next caliper I noticed my car would lose 100% of the pedal the second you turned the car on. Thinking there must possibly be some air in the lines still I did the same thing with the same bottle but having my wife pump the brakes until firm then cracking the bleeder and doing the same thing of no air in the lines for 10 open/close of the bleeder before moving on. Still no pedal as soon as turning on the car, so we did the same procedure 3 more times and then tried again, and then no pedal once the car was on. So I got a good power bleeder and tried power bleeding.... same results...
Do any of you have any idea why this would be happening? The brake pedal is 100% normal until the car is on then it drops to the floor and all pressure is lost, however when you go to crack the bleeders open for the first time afterwards there is no air coming out of any of the bleeders. Just to rule this out, this has been happening over the course of a week and I have seen no stains or wet marks on the cardboard I put below each caliper.
I've never experience this and my friend who was an ASE certified Automotive Technician for 10+ years wasn't sure what would be causing this either. So a bit of backstory - I recently started having my front calipers stick after about 90,000 miles on both calipers. I have had 2g front calipers since I traded for my car in 2009 so no recent modifications of any kind, I was just replacing them because they were sticking. Other than the sticking occasionally the brakes worked fantastic and had zero issues.
After replacing the calipers and bleeding the brakes using a single person bleeder doing the standard procedure of rear passenger, rear driver, front passenger, front driver and bleeding until no air came out from 10 turns of the bleeder before going to the next caliper I noticed my car would lose 100% of the pedal the second you turned the car on. Thinking there must possibly be some air in the lines still I did the same thing with the same bottle but having my wife pump the brakes until firm then cracking the bleeder and doing the same thing of no air in the lines for 10 open/close of the bleeder before moving on. Still no pedal as soon as turning on the car, so we did the same procedure 3 more times and then tried again, and then no pedal once the car was on. So I got a good power bleeder and tried power bleeding.... same results...
Do any of you have any idea why this would be happening? The brake pedal is 100% normal until the car is on then it drops to the floor and all pressure is lost, however when you go to crack the bleeders open for the first time afterwards there is no air coming out of any of the bleeders. Just to rule this out, this has been happening over the course of a week and I have seen no stains or wet marks on the cardboard I put below each caliper.