Sebring V6-2.5L VIN N (1997)
Vacuum Brake Booster: Testing and Inspection
For simple checking of the brake booster operation, carry out the following tests:
Brake Booster Operating Test
1. Run the engine for one or two minutes, and then turn the engine off. If the pedal depresses fully the first time but gradually becomes higher when
depressed succeeding times, the booster is operating properly. If the pedal height remains unchanged, the booster is defective.
Stepping On Brake Pedal To Check Booster
2. With the engine stopped, step on the brake pedal several times. Then step on the brake pedal and start the engine. If the pedal moves downward
slightly, the booster is in good condition. If it does not move at all, the booster is defective.
Depressing Brake Pedal To Check Condition Of Booster
3. With the engine running, step on the brake pedal and then stop the engine. Hold the pedal depressed for 30 seconds. If the pedal height does not
change, the booster is in good condition. If the pedal rises, the booster is defective. Brake booster performance is satisfactory if it passes all three
operating tests.
If the brake booster does not pass all three tests, there may be a fault in the check valve, vacuum hose or in the booster itself.