Re: Audi S4 1998 2.7 AGB Low boost and multiple codes. Archived Message
Posted by Alan Kane on September 6, 2007, 11:34 pm, in reply to "Audi S4 1998 2.7 AGB Low boost and multiple codes."
Hi Mike, If it is suffering lack of boost then why is it setting an overboost code? Check the MAP sensor. Maybe there are shared earths or ref for MAP and CMP. I assume that has a MAF. What are the airflow figures like before it suffers the overboost? I have had a few VAG MAP sensors reading high but never effecting other sensors. I have had faulty VAG hall sensors causing other sensors to short. Get the scope out ya lazy git. Alan
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