Question about Saturn SL2
This occurs due to short in brake wiring's and connections.Check the brake light wiring's and brake light switch.There is a short in the wiring and this is causing the car to cut off when brake is applied.Also get the car battery checked.A properly charged battery will show the exact voltage of 12 volts.
Also check the master cylinder and booster. The booster is that black round thing the tube plugs into and the master cylinder sits on. The brake power booster is an aid that uses engine vacuum so you do not have to push as hard to stop.It also uses a lot of air.It is a diaphragmand it could get a hole in it. The power brake booster is mounted on the firewall directly behind the master cylinder and, along with the master cylinder, is directly connected with the brake pedal. Its purpose is to amplify the available foot pressure applied to the brake pedal so that the amount of foot pressure required to stop even the largest vehicle is minimal. Power for the booster comes from engine vacuum. The automobile engine produces vacuum as a by-product of normal operation and is freely available for use in powering accessories such as the power brake booster. Vacuum enters the booster through a check valve on the booster. The check valve is connected to the engine with a rubber hose and acts as a one-way valve that allows vacuum to enter the booster but does not let it escape. The booster is an empty shell that is divided into two chambers by a rubber diaphragm. There is a valve in the diaphragm that remains open while your foot is off the brake pedal so that vacuum is allowed to fill both chambers. When you step on the brake pedal, the valve in the diaphragm closes, separating the two chambers and another valve opens to allow air in the chamber on the brake pedal side. This is what provides the power assist. Power boosters are very reliable and cause few problems of their own, however, other things can contribute to a loss of power assist. In order to have power assist, the engine must be running. If the engine stalls or shuts off while you are driving, you will have a small reserve of power assist for two or three pedal applications but, after that, the brakes will be extremely hard to apply and you must put as much pressure as you can to bring the vehicle to a stop.
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Posted on Jun 04, 2010
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Posted on Jan 02, 2017
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