Technical Stilo Abarth Selespeed Pump starting too often

[RainMan1]

Hello! I want to know if it's normal or i am having some malfunction in my selespeed system. Engine idling, the pump starts every 7-8 seconds, it feels in engine rpm goes up and down a bit every time pump starts(7-8 seconds i counted).

Is normal? The pump should start so otfen to maintain the pressure of the hydraulic system? No errors, i scanned the gearbox with MES.

Thanks!

 

[Maigretnz]

Have you used MES to print a graph showing the pressure vs time? It could be accumulator on the way out as this acts as a pressure reservoir.

 

[RainMan1]

I checked the accumulator itself and i found it was a bit loose. It was tight back and now seems ok. I used MES and printed a graph. Now the pump starts every 130-140 seconds.

I did the Production/Service Final calibration but the 1st and 2nd aren't smoothly at all. When cold 1st gear is shaking the car back-forwards.

 

[Maigretnz]

You did the bleed procedure?