I have a 1999 Mercury Mystique with around 177,500Km. I had an EGR valve insuficient flow error code so I change the EGR valve and the check engine light is still coming ON. The old valve had heavy carbon build-up and that's what I thought the problem was but it still tells me insuficient flow. I've tested the new valve and it works properly. Me personally, I don't think the vacuum is pulling hard enough to open the valve. What can I do?
Tuesday, September 5th, 2006 AT 9:31 PM