I have an 996 - 99mod manual 3,4L.
When i start up it seems like it misfires. It`s kind of a knocking sound. Sometimes it stops on idle.
When i push the throttle for a ouple of seconds, it smokes a lot and then the knocking goes away.
After that, I let it Idle - but it slowly rises from 800rpm to around 2000rpm, then it drops to 800rpm again and do the same thing over and over again,
Does anybody have a clue?
This is the fault codes i found:
P1601 -CAN timeout - instrument cluster
P0600 - CAN timeout Tiptronic