e-46 Misfiring - Blowing hot air through vent

Rudi

Member
I have a 328i '99 that has done high mileage. Car has been serviced at all the required intervals.

It is misfiring on cylinder 2, only when cold +/- 2-3 km, and two workshops have to date unsuccessfully tried to rectify.

I have replaced the coil on that cylinder.

The other problem is that the vents are blowing hot air even when ambient is low. The heater control valve has been replaced with no success. What else can be the problem?
 
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