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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   2006 Toyoto Camry XLE Driver Side Electric Window Trouble Hello, Looking for a little brain help ...   Tierod end change caused some kind of leak Hello so I just took my car to the nearb...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...   Howdy     Just wanted to s...   ABS/Tractiob/Brake Lights on But No DTCs Hello all, Recently while driving m...   Chevy strut replacement I'm trying to get a sensor of some kind ...

Search Auto Parts Search Air when hitting brakes Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Car Troubleshooting dmsinaz New User May 28, 2013, 6:09 PM Post #1 of 3 (1648 views) Air when hitting brakes Sign In 1990 Pontiac Transport 3.1 engine 175000 miles Today a sound started when hitting the brakes. There is a air flow sound coming from the bellow which goes to the master cylinder. The Sound happens when hitting the brakes only. The pedal goes down just over half way, and the sound continues until I release the pedal. It also has a low idle at stop lights, which seems like a vaccum leak. I have check the hose going to the brake booster and not issues there, I had tried to research if it is the power brake booster but get different stories, and do not know if it might just be the check valve. Hammer Time Ultimate Carjunky / Moderator May 28, 2013, 6:20 PM Post #2 of 3 (1637 views) Re: Air when hitting brakes Sign In Sounds like your brake booster is leaking vacuum and will have to be replaced. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. dmsinaz New User May 28, 2013, 6:23 PM Post #3 of 3 (1630 views) Re: Air when hitting brakes Sign In Could it be the check valve on the booster? I pulled it off and I can blow in one end coming from the manifold, and the other end it will allow me to blow into it sometimes as if it doesnt seat all the way every time.   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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