dear All, i am from viet nam. my car fiat siena HL 1.6. it has black exhaust smoke, when idling, engine is shaking and easy turn off. i bring it to garage, technician (he is good at fiat) change many things but can't find problem.

suddenly, he change ecu by albea ecu. it work well.

he said my ecu (iaw 49f bz) has problem.

where can i buy ecu for my car? cheap and remove code so i can use with my old key?

thanks you very much,
Tri.

Welcome here.
ECU is difficult to find, but try Ebay.
Your best change is to have it repaired by a specialist.
Did you change the O2 sensor..??

honestly i don't know what he tried..but when he change ecu by albea ecu and it run smooth ...anyway i will ask him try O2 sensor, thanks you. Tri.

Trilv said:

honestly i don't know what he tried..but when he change ecu by albea ecu and it run smooth ...anyway i will ask him try O2 sensor, thanks you. Tri.

Click to expand...

Did the mechanic reinstall the Old ECU...?
just make sure a poor connection had not been restored..
Charlie

yes he did and still no luck. Tri