[davealfa11]

recently just had this issue for about 2 weeks, ive checked all the vac pipes, maf, map, airfilter, egr, and it still comes up with the mcsf light but intermittently and i then thought its possibly sticking vanes but the actuator arm moves freely?, so my final attack was to take the turbo off, today was the day and ive just looked at it both intake and exhaust fins spin freely, but part of the exhaust fin has snapped off, could this be the reason for the intermittent mcsf light to come on?

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thanks
chris.

mcsf light come on usually on a light opening ?

 

[davealfa11]

another update, mcsf is still coming up now and then, and sometimes stays on. Ive checked with Fiatecuscan and the boost pressure is definitely too high for the desired boost pressure.
so obviously the boost is spiking even at 1800rpm and when de accelerating.

any ideas why the boost is too high, Maybe map related? and cleaning it wasnt enough.

cheers
chris.

Turbo what was fault code ?