Accumulator – Alfa Romeo 147 156 GT Selespeed
The accumulator is responsible to store the pressure of the hydraulic system for later access by the actuators. The bladder type accumulator has two cells: one cell storing the hydraulic fluid and one cell containing a gas to create counterpressure. Both cells are separated by a membrane. These accumulators have a certain life span and a common defect is that the gas leaks out of the cell, which causes the system to be unable to build up hydraulic pressure. In many of such cases, the pump appears to prime permanently.
We offer the brand new original Magneti Marelli spare part.
EV0 Clutch Solenoid Valve – Alfa Romeo Selespeed
The EV0 Solenoid Valve is responsible for the clutch actuation of the Selespeed system. A faulty EV0 can cause problems while engaging the clutch (for example shuttering) and in consequence the car refuses to change gears.
We sell an original Magneti Marelli spare part. Depending from model and year of construction the numbers on the sticker label may vary. In case you are not sure if the part fits your car, please contact us before you buy.
EV1 Engagement Solenoid Valve – Alfa Romeo Selespeed
The Engagement Solenoid Valve EV1 is responsible for engaging odd gears 1-3-5 of the Selespeed system. In the case of failure of this valve, the car will refuse to go into one or more gears.
EV3 / EV4 Selection Solenoid Valve – Alfa Romeo Selespeed
The Selection Solenoid Valves EV3 and EV4 are responsible for selecting the gears of the Selespeed system. In the case of failure of this valve, the car will refuse to go into one or more gears.
Pressure sensor – Alfa Romeo Selespeed
The pressure sensor is responsible to detect the hydraulic pressure in the accumulator of the Selespeed system. This is an original and brandnew spare part.
Pump motor – Alfa Romeo 147 156 GT Selespeed
The pump motor drives the gear pump, which generates the pressure for the Selespeed transmission. Both parts together form the hydraulic pump. Without hydraulic pressure, the transmission cannot perform any action – neither change gears, nor operate the clutch. Therefore, the hydraulic pump is the most important component in the system.
In most cases, it is sufficient to replace only the electric motor, as this is a wearing part. The gear pump fails only very rarely. Another advantage is that when only the pump motor is changed, the hydraulic system does not need to be bled afterwards, unless it has been opened.
We sell an original, brand new Magneti Marelli spare part – the same part you would get from Alfa Romeo.
Selection / Clutch Sensor – Alfa Romeo Selespeed
The Selespeed selection and engagement position sensors (Potentiometers) are responsible to detect the current state of the gear engagement. The clutch sensor is responsible to detect the state of the clutch. There are three of these sensors installed on the Selespeed unit. A faulty sensor can prevent the car to engage gears or shift.
We sell an original spare part from Magneti Marelli.
Transmission speed sensor – Alfa Romeo Selespeed
This sensor provides the speed signal of the transmission input shaft. The speed signal is required by the control unit to control the transmission system, adjusting properly the shaft speeds before engaging and disengaging the different gears.