03 4x4 2.7L 5spd.......so i was driving the other day and got a check eng. light on p0401.......took it to the dealer and a master tech took a look....he said replace the egr valve and vsv solinoid . so i did this and the light came back on.
prior to replacing these parts i checked out the egr with a vacuum gauge(applied vacuum and engine wanted to stall, so i figured it was ok)
removed the vsv and applied vacuum then actuated it with battery voltage , vacuum released- figured that was ok too)
looked inside egr to exhaust manifold tube and its completely clear!....wtf!
anybody have this problem?