Secondary air pump and diverter valves. Testing.

[Jollyman]

Hi All

I'm new to the forum but would be grateful for any advice you may have.
I have a 2000 RS4 B5, and the engine management light is on because of the secondary air pump failure.
Although the pump was not 2 years old when I had the problem diagnosed Audi refused to replace it because they said the pump had failed as 1 or both diverter valves had failed causing moisture to enter the pump and therefore causing it to fail. I have since bought a second hand pump and valves and plan to swap them over. The question is how do I test to make sure both valves are working and avoid this happening again.

Many thanks

Tim

[graemep]

The best way to avoid any further issues would be to have the system removed, and coded out - speak to a reputable tuner rather than Audi to have this done

The secondary air system is only really there to control emissions on a cold start, and is not used when the car is up to temp.