P401 Insuff. Flow EGR 2000 Buick Century 3.1L

buy · **Joined:** Tue Jan 22, 2008 12:33 pm **Posts:** 2

Hello, This seems to be a great sight. I have this code P0401 on my car that keeps comming back within a few miles of driving. I have changed the EGR and Pipe to the exhaust. It won't go away. Any suggestions would be appreciated.

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

jeff compton · **Posted:** Tue Jan 22, 2008 1:24 pm

There's aport through the intake manifold that is probably plugged with carbon, I think it requires removing the intake to clean if I remember correctly!

buy · **Joined:** Tue Jan 22, 2008 12:33 pm **Posts:** 2

Thank you for the help. I had the intake removed and it was clogged. I had used compressed air through the exterior EGR port at first and thought it was clear. Now I am having to drive it around until the ready monitors reset. Thanks again. This site is great and I will reccomend it to anyone that asks about a car problem.

jeff compton · **Posted:** Thu Jan 24, 2008 4:15 pm

Thanks for the kind words!

P401 Insuff. Flow EGR 2000 Buick Century 3.1L

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