johnnyg64 Posted August 29, 2017 Share Posted August 29, 2017 Hi Folks. I have an Audi 80 B4 series 2.0 litre, 8 valve, ABT Engine. Does anyone know if rough idling or erratic/uneven idling is a common problem with this engine as I have seen another owner with the same problem with a Volkswagen Transporter T25 2.0 litre petrol in a monthly magazine publication in the problem/letters page as I have experienced the same problems and does anyone know a fix/cure for this? Many thanks. John Quote Link to comment Share on other sites More sharing options...
Trevor Posted September 5, 2017 Share Posted September 5, 2017 Hi John From memory, it will be the idle speed control valve (ISCV) that will need cleaning out (with carb cleaner) and also ensure that any vacuum hoses are intact and no leaks present. Quote Link to comment Share on other sites More sharing options...
Guest Posted August 16, 2019 Share Posted August 16, 2019 I had the same problem on my Audi cabriolet 2.6E 1994 I had to buy a second hand throttle body,this cured the problem. Quote Link to comment Share on other sites More sharing options...
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