'98 Camry egr malfunction?

Question

Service engine light came on and code indicated egr problem. VAC switching valve and VAC modulator were replaced. The third component of this system is the egr valve. It was tested by applying a vacuum (hose attached when engine was off) to the egr valve. Caused engine to labor at idle but had no effect at 2500 rpm. What could be causing the engine light to stay on and indicated egr problem. (Light has been reset after each part replacement.)

Answer 1

Jane, here are the components and how to check them!

http://www.autozone.com/addVehicleId,240...

Here is the vacuum diagram

http://www.autozone.com/addVehicleId,240...

testing

http://www.autozone.com/addVehicleId,240...

good luck!