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SportTrac Discussion
Engine & Drivetrain
Cat convert. blew out check engine light, PO171 too lean.!!!
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<blockquote data-quote="Jerry Gerner 2" data-source="post: 917257" data-attributes="member: 67360"><p>Hey guys, ok so I installed the SD coil pack, Live Wires, Autolite APP 103's, fuel filter like suggested. Later that day the check engine light comes on, I go to Advanced, code 171 too lean, after I leave there the Cat starts breaking apart and truck lags. So I replace the PCV Valve, clear the codes and runs fine for a day. I was on the highway doing 60 climbing a mountain and the truck starts to lag again, give alittle more gas and the check engine light starts flashing, get over the mountain and the light goes out, mile down the road lights back on solid and truck really lagging. WTH??? I know I need to replace the Cat, do I need to replace the O2 sensors now too??? What else could be wrong?? Please help!!! :cry::banghead::banghead:</p></blockquote><p></p>
[QUOTE="Jerry Gerner 2, post: 917257, member: 67360"] Hey guys, ok so I installed the SD coil pack, Live Wires, Autolite APP 103's, fuel filter like suggested. Later that day the check engine light comes on, I go to Advanced, code 171 too lean, after I leave there the Cat starts breaking apart and truck lags. So I replace the PCV Valve, clear the codes and runs fine for a day. I was on the highway doing 60 climbing a mountain and the truck starts to lag again, give alittle more gas and the check engine light starts flashing, get over the mountain and the light goes out, mile down the road lights back on solid and truck really lagging. WTH??? I know I need to replace the Cat, do I need to replace the O2 sensors now too??? What else could be wrong?? Please help!!! :cry::banghead::banghead: [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Cat convert. blew out check engine light, PO171 too lean.!!!
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