Calgary Jeep Association
4x4 Related Groups => Tech Talk => Topic started by: JackstandJohnny on September 03, 2013, 01:06:57 PM
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noticed this on the weekend.
brakes don't feel right. initial pump of the brakes it feels ok but then the pedal slowly starts going to the floor. so if i come to a stop at the light the jeep stops but then it will start to creep forward (as there is no brake pressure)
i first noticed it on a hill this weekend when i was on the brakes, cause instead of stopping it crept forward (and into a tree) by the end of the weekend i was pretty much pressing pedal to the floor just to stop on downhill parts. road its not as bad but again, at a stop light the pedal goes down and jeep creeps forward.
fluid levels are perfectly high, and theres no visible leaking at calipers.
master cylinder crap the bed?
edit: upon further investigation i can see some weepage from teh master on the brake proportioning valve and the booster. new master cylinder is on the way
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pull the vacuum line off your booster and clamp it off. Try that. Will revert to manual brakes but you will then rule out the booster. Ive had 2 go in the past...