golfcarr
Junior Member
2004 1500 2wd 4.7 SLT
New to me truck (daughter has been driving) recently noticed the brake pedal goes to floor under light pressure while engine is running. With a normal press on the pedal (harder) the pedal is normal until the truck stops, then pedal sinks to floor while sitting still.
In other words, the brakes currently work as they should, problem is the pedal goes to floor and will not pass inspection. Only changes that have been made over the last 4 months are removal of an electric trailer brake controller. should not have any affect (or effect?)
Things I have done:
Manually bled the brakes with person pumping and holding while Im under the truck cracking the bleeders.
Visually inspected hoses and calipers for leaks (none)
Replaced master cylinder (twice... in case one was defective - auto parts store reluctant to swap)
Bled system manually, have run about 5 qts of brake fluid thru the system.
Purchased Mitivac pump and tried to bleed that way.... no difference.
Symptoms remain same, brakes work as they should, but pedal STILL goes to floor.
What am I missing other than a trip to a PROFESSIONAL brake technician ?
New to me truck (daughter has been driving) recently noticed the brake pedal goes to floor under light pressure while engine is running. With a normal press on the pedal (harder) the pedal is normal until the truck stops, then pedal sinks to floor while sitting still.
In other words, the brakes currently work as they should, problem is the pedal goes to floor and will not pass inspection. Only changes that have been made over the last 4 months are removal of an electric trailer brake controller. should not have any affect (or effect?)
Things I have done:
Manually bled the brakes with person pumping and holding while Im under the truck cracking the bleeders.
Visually inspected hoses and calipers for leaks (none)
Replaced master cylinder (twice... in case one was defective - auto parts store reluctant to swap)
Bled system manually, have run about 5 qts of brake fluid thru the system.
Purchased Mitivac pump and tried to bleed that way.... no difference.
Symptoms remain same, brakes work as they should, but pedal STILL goes to floor.
What am I missing other than a trip to a PROFESSIONAL brake technician ?