Famous 2003 Audi Rs6 No Check Engine Light And Fan Runs 2023. Web if you stop and the tick over is still around 1000 rpm and the cooling fans are running, it's because it hasn't finished the process and it's trying to cool things down. When there is even a small leak, the coolant will boil.loose cap on coolant tank.
Web emissions issues, air leaks. It could also be a thermostat or control module. It misfires and the flashing engine.
