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Chevrolet Repair/98 malibu 3.1 p0401

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Question
when my car heats up it studders and then dies until it cools off. the code shows p0401 egr insufficient flow- i have replaced the egr valve which has had no effect. i dont think it has a dpfe. any ideas on what could be causing this. maybe the catalytic or ecm? i am in dire straits to get this car running. any and all help is greatly appreciated
thank you
randy

Answer
Hello Randy, Help me please... What engine does this car have??? What is a dpfe? If it is a V6, the passage going to the EGR valve is plugged at the intake runner. You can clean this with a coat hanger through the throttle plate.


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Mark

Chevrolet Repair

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Mark Bisig

Expertise

I have been working on Chevrolets since 1979 and do all minor and major repair of these vehicles. I work at a large Chevrolet dealer. I can answer questions on engines, transmissions, drive-line, A/C, PCM, drivability. I will do my best to answer and get back to you fast.

Experience

26 years working at a car dealer

Education/Credentials
Denver Automotive and diesel college

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