Magneti Marelli robobox pump

[XJS]

How often does the robo box pump work? If the pump is activated every 5 seconds when the engine is running it is normal?

[Chris32345]

A lot less then that unless you are changing gear or going slowly so the box needs to activate the clutch

Sounds like on the accumulator that stores the pressure

[XJS]

Thanks for the answer.
When I changing gear pressure is enough for two shifts. This is when the engine is not running, the ignition is on.
The pump runs every 5 seconds with the engine running on neutral and I do not shift gears.

[Chris32345]

I'm assuming this is a fiat/Alfa dual logic/selectspeed system?
Definitely sounds like it's loosing pressure somewhere I'd want to get this sorted asap as running that much will likely cause damage to the pump and then the bills Will really start to rack up
There's a big thread on fiat forum about this box /system

You need to get a diagnostic system on the moniter the pressure to be sure of any issues

[XJS]

Thanks. I will look for a Fiat/Alfa thread. I searched in the Ferrari thread and did not find.

[Sardonicus]

Chris32345 said:

A lot less then that unless you are changing gear or going slowly so the box needs to activate the clutch

Sounds like on the accumulator that stores the pressure

This ^ sounds like the pressure accumulator as failed or some kind of internal leakage that is bleeding off stored pressure prematurely

[XJS]

Solved.
That was internal leakage thru the clutch valve (QPV). That now is more than 40 sec pressure hold.
It's weird, just 30K on the clock.
Is 40 sec and two shifts normal?

[Chris32345]

XJS said:

Solved.
That was internal leakage thru the clutch valve (QPV). That now is more than 40 sec pressure hold.
It's weird, just 30K on the clock.
Is 40 sec and two shifts normal?

That Definitely sounds like a more normal value