Hello Ben Beware from Holland

to the forums.
Sounds like the fan works really good, if it is hot outside it will certainly be inside.
If the climate controll doesn't work well, you might recharge the air conditioner and replace the microfilter.
Yes the e36 cars have a chain, and if you find a service manual, lemme know! :wink
{EDIT: you most have posted as soon as i opened the thread, cam!}