Hello werte Forumsgemeinde, da my omi after KWS exchange and new petrol pump runs again *joy* I want to get to the last “construction site” now… My heating or ventilation has a problem – he wants to heat, but if I stand on the gas the ventilation flaps close – go from the gas I hear a “beat” noise from the lower part of the amature board – as if a ventilation flap opens up then hot air comes up. This happens no matter in which S I also hear a “hissing” noise from the area from the heating elements. I think there is a hose off or leaks somewhere. Question: how do I get the vacuum hoses from the ventilation switch? Oh yes: have found a vacuum valve with two connections in the driver’s footroom behind the safety box, which has an electric connection and where a blue vacuum hose goes in – on the other side is NOT a key. lauch… ???? Thank you for your help! Greetings Rico 97’er Omi B Caravan 2,0 16V climate (no automatic air conditioning), switch, gas system and 288′ on the clock 🙂