V6 (1994-2004) MustangsTechnical discussions on the 3.8L and 3.9L V6 torque monsters Sponsored by Optima Batteries
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Not sure of the exact code, but could the "secondary air" thing be the dual runner intake system? I know there have been issues with that thing. There is a black motor/gear assembly at the rear of the engine that drives two rods to two bell cranks at the lower intake manifold. Its way down low, right against the dash panel. You might need a mirror to see what's going on. You might try to GENTLY move one of the cranks to a mid position so see if the system resets. As I understand it , generally the system runs in one mode or the other (fully open or fully closed) Its possible the system is 'stuck' in the wrong setting. That could set a code.
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