Today bought new master cylinder bench bleed installed bleed all brakes and RABS as suppose to, new brake fluid and new drums and brakes but still have same problem!!! When slamming on the brakes feels like only front brakes working got better with what i did but when in reverse back brakes don't work lifted the back up and in reverse back right tire keeps spinning is this normal? But in drive it doesn't. Adjusted them as well. My EGR is not hooked up will hook it up tomorrow Rpm are high could this be it, im hopeingr so! Abs light is on if its not working with the EGR hooked up think it might be the RABS solenoid or booster what do you think? Oh by the way its a 91 Ford Bronco 7inch lift with 4.10's in rear if that helps.