This week i have changed the crank sensor, fuel filter, rewirred the fuel pump, checked the 3 Connector of engine loom and cleaned the idle speed sensor ..

So i drived now for 2 days, and had no missfires and the revs goes only sometimes down to 500 rp/m

Now i will try it some days more and look again at the idle speed sensor.

As i changed the air charge sensor 2 weeks ago the missfires was gone for few days,
and come back..