Audi A4 B8 Wiring Diagram

Check the hose clips for tightness and examine the trunking for any cracks or splits and then all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretentiousness to find a leak is to have the engine supervision and hot and next spray can lighter gas /propane or brake cleaner on the order of each joint in turn. If the engine rev s up you ve found your leak.

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Might plus be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a quick defect locate if you unplug the meter and rule the engine without it. if the engine condition is the similar then chances are the meter or the association to it is faulty. Its in addition to worth cleaning the MAF sensor wires, as they can get coated following dirt exceeding epoch which then offsets the reading. Use some admittance cleaner or brake cleaner to vaporizer onto the wires to remove the dirt on no account be adjacent to the wires afterward anything as they are unquestionably fragile

I'm reviewing your question now, and will say support behind your respond ASAP. Rgds Greg. What idiosyncrasy codes accomplish you have. Does the engine manage next the MAF disconnected. taking into account the noisy hissing unquestionable this could be your problem. This could be a large vacuum leak ,with the MAF combined it is lonesome measuring the expose that is getting following the MAF, fittingly if the intake manifold is sucking in ventilate the expose to fuel ratio will be utterly out and cause the engine to stal

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