Flex fuel running rich

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stss95

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Jan 20, 2008
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Anyone else have a problem with their flex fuel 5.3 running rich? My was constantly smelling like rotten eggs, I took it into the dealer and they said the fuel sensor was reading 18% ethanol when it was really only 10% they said they retuned the computer and reset the sensor. It ran fine for about 4 months and now the smell is back. I bet the reading is off again, all I ever run is regular gas no e85.
 
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