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How to Tell If the Brake Booster on a Ford F150 Is Bad? Your Ford F-150 comes equipped with a power brake system, which includes a booster, vacuum hose and fittings. This system greatly increases the pressure you can apply to the brake pedal when slowing or stopping your pickup. After years of service, though, the vacuum hose connecting the engine to the booster may harden, crack or swell, and finally leak. Also, the booster internal diaphragm may rupture or some other component may wear out and render the unit inoperative. Know the condition of the brake booster in your F-150 now by performing two simple tests at home, without the need to use any tools. Instructions Apply the parking brake in your F-150, but do not touch the brake pedal. Start and idle the engine in your F-150 without touching the brake pedal. Let the engine idle for one minute, turn off the ignition and wait for another minute before proceeding on to the next step. Depress and release the brake...

How to Replace the Break Booster on a Chevrolet Silverado The Chevy Silverado´s braking system operates with disc brakes, which require the use of power brake boosters. Prior to disc brakes, stopping a truck required much more effort compared to the modern systems that take advantage of a vacuum created by the truck´s engine. Just like any truck part, the brake booster undergoes normal wear and tear and can lose its capacity to assist in braking. When this occurs, it is time to replace the brake booster and regain your truck´s braking ability. Things You'll Need Socket wrench Flashlight Screwdriver Instructions Lift the hood of the truck and locate the master brake cylinder -- it is located on the firewall, opposite of where the brake pedal is in the cabin of the truck. You can identify the master brake cylinder by the brake lines that are attached to it; these brake lines run from the brake linkage through the truck´s firewall and connect the brake booster to the m...

Brake Issues Occur Again n Again on Jeep Regarding Jeep Grand Cherokee, Brake Problems Q: My vehicle is 97 Grand Cherokee with 55k miles. Wee just replaced 4th set of  brakes put on including the original set. The rotors and pads were replaced each time. That equals a new set approximately every 14k miles. It is driven in very mild conditions around town with no heavy braking. It always has the same problem. The brakes feel like they engage and disengage as you come to a stop. It gives a slow pulsing sensation. The first evaluation always offered is warped rotors. The problem is that immediately after a brake job you still can feel this problem. It’s milder at first and then becomes more pronounced as time goes on. I also know it has nothing to do with the rear brakes because if you use the hand brake to stop you don’t get the symptom. The second theory is some type of ABS malfunction.This has been completely dismissed by the dealer. Any idea what the problem could be?? ...