i need to know the location of the suction pump on a 2000 A4 1.8T. i had to replace my vacuum valve and my suction pump. i replaced the vacuum valve, but i can't find where the suction pump is. also, a picture would help immensely! thanks guys and girls!

 

suction pump= secondary air pump?

 

If it is the secondary air pump it is under the car by the passenger side front, kinda under the stock air box. You can see the intake tube running to it if you remove your stock air box, follow that down and you'll find it.

 

no, the jet pump valve that looks like a "Y"