Hey guys my au 347 won't start, cranks over, I have tested for fuel and spark that seems to be sweet, emobilser seems to turn of when cranking over, I've also tried two sets of keys on it, I've recet the ecu and sct flash tuner to stock then back to custom tuneonly thing I have noticed is one different sounding click when I'm cranking the engine over, the last time I started the ute 1 week ago is was idling rough and conked out then didn't want to start again( know nocking or anything just spluttering and running rough then died :/ was running sweet before this

Check your compression

Ok got it tatted today it randomly started took a while though pluged the sct x3 on it and I take up with an error p0500 which means speed sensor malfunction what could that mean ?

Speed sensor is on the transmission assuming you have a T5. Or wiring issue or ECU issue