powerloss 2005 G.voyager 3.3 AWD
 

My car have had some misfire issues and this year I have done this:
New-Pcv valve-coil-plugs and wiring-coil Connector and harness-map sensor-fuel injectors and fuel rail wiring harness-gasket intakeplenum and throttle body-O2 sensors-New battery.
Drove the car about 3000 km running fine and then powerloss driving, max speed 20.30 km/h. Runs very good when I am not driving. Cat and exhaust is ok and no vacum leaks.(manifold replacement too)
My mechanic replaced the ECU but still the same.
No noises.
Anybody got any ideas what this can be??