Question about 1998 Ford F250 SuperCab

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P1409 my engine is running real rough I replaced the mass flow sensor and the idle sensor also replaced the fuel filter. it smells very rich at exhaust. I also replaced o2 sensors. I have a p1409 electronic vacuume regulator control circuit code what do I do next?

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Check for vacuum leaks and check the vacuum regulator control unit for correct operation.

Posted on Apr 12, 2014

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SOURCE: Check Engine code P1409

clean the egr valve port on intake use piece of clothes rack clean the built up carbon on inside of port.

Posted on May 20, 2009

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