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SN-95 and New Edge Mustangs
2002 Saleen Modifications
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<blockquote data-quote="2003RedfireVert" data-source="post: 16907823" data-attributes="member: 203044"><p>Case in point…My neighbor has a 2013 Yukon. His truck was throwing “rich” codes. So he put in new O2 sensors. Still ran rough, still ran rich…lights came back on. They replaced one rear O2 sensor …same problem. He was baffled. His mechanic didn’t know the problem. I told him it was probably actually running rich due the alcohol content being wrong and to have his mechanic look at that. Low and behold, his mechanic found that the ethanol content value the computer had was 70%. His truck was running E70 fuel trims on pump gas. Fairly common problem on the GM flex fuel vehicles.</p><p></p><p>They chased this problem for months. Had his mechanic properly diagnosed the problem and actually looked at the data, he would have fixed his truck in 5 minutes for free by resetting the alcohol content value (which I did last night for him). Instead they spent several hundred dollars and hopefully didn’t ruin his catalytic converters due to running filthy rich for months.</p></blockquote><p></p>
[QUOTE="2003RedfireVert, post: 16907823, member: 203044"] Case in point…My neighbor has a 2013 Yukon. His truck was throwing “rich” codes. So he put in new O2 sensors. Still ran rough, still ran rich…lights came back on. They replaced one rear O2 sensor …same problem. He was baffled. His mechanic didn’t know the problem. I told him it was probably actually running rich due the alcohol content being wrong and to have his mechanic look at that. Low and behold, his mechanic found that the ethanol content value the computer had was 70%. His truck was running E70 fuel trims on pump gas. Fairly common problem on the GM flex fuel vehicles. They chased this problem for months. Had his mechanic properly diagnosed the problem and actually looked at the data, he would have fixed his truck in 5 minutes for free by resetting the alcohol content value (which I did last night for him). Instead they spent several hundred dollars and hopefully didn’t ruin his catalytic converters due to running filthy rich for months. [/QUOTE]
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