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2002 Mercury Cougar Question: mercury cougar black smoke problem

 

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chevy 38, 2.5L V6, Shellman, GA, March 28, 2014, 08:40
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My 2002 Mercury Cougar has black smoke coming out the tail pipe when idle at times and when accelerate hard service engine light is on code reads po401 replace 02 sensor down stream @ back of car it don't run rough at all.

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  • Answer #1

    March 28, 2014, 08:52
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     Master

    Scan test needed! Live data will help a bunch!

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    chevy 38, March 28, 2014, 09:28
     Rookie

    what do you mea by scan test and push rod and camshaft, that mean I need a new engine

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    chevy 38, March 28, 2014, 09:29
     Rookie

    what do you mean by scan test and push rod and camshaft, that mean I need a new engine

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    chevy 38, March 28, 2014, 09:29
     Rookie

    what do you mean by scan test and push rod and camshaft, that mean I need a new engine

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