Saab 9-5 v6 2000 - Servere misfire when cold, goes when hot #Archived Message
Posted by john weddup on May 22, 2007, 4:42 pm
Engine has severe misfire cold that goes when hot at idle but reoccurrs under load.
It is front bank centre cylinder.
Has had coilpacks swapped front to back and injectors swapped. Also swapped injector signals around.
Engine vacuum drops when engine hot and revved to induce misfire. It sort of comes in when revved and stays there for a little while until it goes. When it is there engine vacuum is a lot lower so suspect a sticky valve or collapsing follower etc.
Just wondering if anyone has experience of this engine and fault.