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egr troubleshoot help
hey guys I have had my 01 f150 4.6 for about 6 months now. Has always run a little rough but just barely noticeable. The last month or so my cel has been on and getting a p0401\p0302 code for egr insufficent flow and cyl 2 misfire. I know it is firing on 2 because I have replaced all coils and plugs since I bought it. My main question is should I look at dpfe sensor or vaccum solenoid or since the 401 code has the 302 along with it should I look towards pulling the manifold and plenum to clean blocked passages?
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Originally Posted by blueovalbigblock
(Post 13555466)
hey guys I have had my 01 f150 4.6 for about 6 months now. Has always run a little rough but just barely noticeable. The last month or so my cel has been on and getting a p0401\p0302 code for egr insufficent flow and cyl 2 misfire. I know it is firing on 2 because I have replaced all coils and plugs since I bought it. My main question is should I look at dpfe sensor or vaccum solenoid or since the 401 code has the 302 along with it should I look towards pulling the manifold and plenum to clean blocked passages?
with TBH removed then one can remove the Idle Air Control (IAC) and clean it as well. the 2 previous things to do are considered just good maintenance and may not address the 401 code the 302 hints that there is issue with the #2 cyl coil and or plug or the connection to the coil. look the vacuum lines over carefully that are associated withe EGR sytem |
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