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#1 |
Registered Member
Join Date: May 2003
Location: ohio
Posts: 1
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![]() New to board.My mustang was running like a dog,so I pulled codes 81 KOEO and 41 and 91 KOER. The code reader manual says 81 is thermactor air diverter TAD solenoid circuit failure or electo-drivefan circuit failure or IAC Valve circuit failure.My Hanes manual says 81 is thermactor air circuit. It has relatively new IAC WTF. I would assume 41 nd 91 mean i need new o2 sensors 41 voltage low value lean 91 same. Hanes says 91 o2 sensor problem,fuel preasure out of range or injectors out of balance.I could use some advise on these codes
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