strange problem with fiat punto

[jacostanzo]

Hi mates,

I have a strange problem with fiat punto, ECU Magneti Marelli IAW 16F.EB, after doing immo off, sometimes car dies when running, I have tried to change for a new ECU from scraps, works well by some days and then starts again to happen. After car die, engine only starts to work if disconnecting battery for a while. What's the problem?

Thanks

[mastaflex]

why always direct doing immo off !!!!!!

you have another problem,may be your dual relay is become crazy when it come hot

[jacostanzo]

why always direct doing immo off !!!!!!

you have another problem,may be your dual relay is become crazy when it come hot

Where can I find this relay?

[mastaflex]

remove the cover circled in red

[electrones]

Hi friend

See crankshaft sensor resistance, good luck -_-

[jacostanzo]

I have changed this relay and problem continues... any idea?

[Meat-Head]

yes agree with above poster, change crank sensor