Mercury Mountaineer Emission

Browse Mercury Mountaineer Emission questions and answers. Choose a question that matches your symptoms.

6 discussions

Code P0401, EGR Insufficient Flow?

2004 MERCURY MOUNTAINEER

I've Replaced The Egr Valve And No Changes. What Would You Recommend?

1 ANSWER

1 IMAGE

Asked by fed4267

2003 MERCURY MOUNTAINEER

Where Is The Location Of The Pc Valve On A 2003 Murury Mountaineer ?

1 ANSWER

Asked by BELTRAN734

2003 MERCURY MOUNTAINEER

I Took My 2003 Mercury Mountaineer In For A Smog Check And All Was Good Except My "service Engine Soon" Light Is On. The Obd Code Is Po401 (...

1 ANSWER

Asked by 326402

1997 MERCURY MOUNTAINEER

Can Someone Show Me The Layout Of The Pcv System On A 1997 Mercury Mountaineer 5.0

4 ANSWERS

1 IMAGE

Asked by mikederouin88

1997 MERCURY MOUNTAINEER

Can My Egr Valve Affect Performance And Cause Rough Idle And Can The Same Problem Happen If It Was My Catalatic Converter?

1 ANSWER

Asked by pinang4u

1997 MERCURY MOUNTAINEER

Dianostic Code Says Egr Flow Blockage Hase New Hoses And Egr Valve But Check Engine Light Is Still On. What Is My Problem?

1 ANSWER

Asked by tommypainter2

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