99 Grand Voyager,

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  #1  
Old 01-09-13, 07:22 AM
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99 Grand Voyager,

I have a 1999 Plymouth Grand voyager with the following problems. The plugs turn black, blows black smoke, and acts like it is choking when you drive it and will stall. Changed the fuel pump and filter.
 
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Old 01-09-13, 08:57 AM
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Did you pull the codes? The computer is telling it to run rich for some unknown reason. Possibly a temperature sensor.
 
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Old 01-09-13, 07:51 PM
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engine? but a blind quess would be a bad map sensor. find it unplug it and see how it does. it wont be perfect but if better replace it. if the codes match up.
 
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Old 01-10-13, 05:24 AM
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O2 sensor can do that, too, but should light up the check engine light.
 
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