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Search Auto Parts Search Another spongy brake issue. Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Brake Repair Help billgatt New User Oct 10, 2013, 9:11 AM Post #1 of 4 (1309 views) Another spongy brake issue. Sign In I have a 2009 Dodge Nitro 2.8 diesel 4x4 with 30 k. Car has sat for the past 4 weeks, when I went to drive it I immediately noticed the brake pedal was spongy. Decided to do a test drive, brakes still work fine as does the abs, no warning lights just a spongy pedal which will go all the way to the floor with constant foot pressure. If I stop the engine the pedal goes hard with normal movement but as soon as I start her up again away goes the pedal. If I disconnect the vacum pipe and start the engine up i get hard pedal as normal but brakes are very hard to push and not very effective. No leaks visible and plenty of brake fluid in the resev. Im thinking master cylinder but having read previous discussions on this type of issue sounds as if it could be related to ABS. Any thoughts welcome. Thanks Bill Hammer Time Ultimate Carjunky / Moderator Oct 10, 2013, 9:55 AM Post #2 of 4 (1300 views) Re: Another spongy brake issue. Sign In If you aren't losing any fluid then you have what we call internal bypassing. 90% of the time that is a bad master cylinder but occasionally it can be the ABS unit. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. (This post was edited by Hammer Time on Oct 10, 2013, 10:05 AM) 4cefed Novice Oct 13, 2013, 6:38 PM Post #3 of 4 (1261 views) Re: Another spongy brake issue. Sign In   This has to be some sort of Chrysler gremlin. I'll be watching this thread too, did you read through mine?: http://autoforums.carjunky.com/Automotive_Repair_C1/Brake_Systems_F51/Spongy/creeping_brake_pedal_with_eingine_running_P149298/ Similar scenario, car sat a while and now I have a spongy pedal. Hammer Time Ultimate Carjunky / Moderator Oct 13, 2013, 6:50 PM Post #4 of 4 (1260 views) Re: Another spongy brake issue. Sign In No, lets stop the cross posting and keep these threads separated. Read if you like. Just don't start cross posting. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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