100 psi
Yes, the ignition switch must be in the ignition position -not- the accessory position.
Low brake bressure can be caused by a worn accumulator, poor pump performance, a bypassing brake booster or an inaccurate pressure sensor. To test your brake accumulator, turn the key to the on position and pump the brake pedal. A properly functioning accumulator will give you 25-30 brake applications before the low brake pressure light illuminates
A piston-type accumulator discharges at a constant pressure as it has a piston that separates the gas and fluid sections, allowing for a consistent pressure output as the fluid is discharged.
To depressurize the accumulator on an integral ABS system, first ensure that the vehicle is safely secured and the ignition is off. Locate the accumulator, then carefully release the pressure by opening the service port or valve, allowing fluid to escape until the pressure is fully relieved. Always follow manufacturer-specific procedures and safety precautions to prevent injury or damage to the system. Once depressurized, you can proceed with maintenance or repairs as needed.
Check the check valve located at the inlet of the fuel pump for leaks. It sounds like the fuel accumulator has failed. get under car , remove fuel pukp and accumulator assembly. Remove fuel accumulator, drain unit. Shake unit, if it has fuel inside it has an internal leak and must be replaced. The engine heatsoak causes fuel to boil, the accumulator maintains pressure to prevent this issue.
The accumulator stores brake fluid under very high pressure. An electric pump keeps the accumulator pressurized with brake fluid. When you press the brake pedal, pressurized fluid from the accumulator operates the brakes.
While the ignition is in the ON position, follow this sequence:Turn your headlights to the parking position and then OFF 3x's.
A brake accumulator is a device that holds brake fluid at a very high pressure. It is an important part of a proper brake system.
at the accumulator
pressure switch located on the accumulator
Its on the a/c accumulator..............
3000 PSI