I've never loved my brakes, but they were working a lot better until just the past few weeks when the truck sat after our New Year's trip. I jumped in last week and noticed the pedal sinks nearly to the floor and the engagement isn't very confidence inspiring, hard to panic stop. In a rush to make them work better before a trip up to the (snowy) mountains yesterday, I bled the LPSV and activated the ABS a bunch, which didn't change anything. I've been through most of the brake system in the past 6-12 months (new rotors/calipers/pads front and new pads rear, plus a lot of bleeding) and as recently as three weeks ago the brakes were working fairly well.
In testing, I think maybe my brake booster has failed as I'm not getting any pedal travel down when holding the brake pedal and starting the engine--only hesitation before I spend the $300 for a new booster is that most of the troubleshooting guides (chart in FSM, plus threads here) suggest a failed booster should cause a hard pedal, not a soggy one. Is there any other logical next step you guys can recommend or should I just bite the bullet and buy a new booster? I can pump up the brakes with the engine off in about 3 pumps and then hold it there, so I think that suggests my MC is OK, but I've not touched either the booster or the MC in my time with the truck (18 months.)
Thanks for any other ideas.
In testing, I think maybe my brake booster has failed as I'm not getting any pedal travel down when holding the brake pedal and starting the engine--only hesitation before I spend the $300 for a new booster is that most of the troubleshooting guides (chart in FSM, plus threads here) suggest a failed booster should cause a hard pedal, not a soggy one. Is there any other logical next step you guys can recommend or should I just bite the bullet and buy a new booster? I can pump up the brakes with the engine off in about 3 pumps and then hold it there, so I think that suggests my MC is OK, but I've not touched either the booster or the MC in my time with the truck (18 months.)
Thanks for any other ideas.