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Code 1409 air duct at tb was barely on car had no power or take off from a stop. Also a lot of pinging while trying to accelerate then you had to let off the gas pedal for it to shift correctly now after i unplugging the idle air control valve while the car was running the car stalled out and now when you turn the key to try to start it it does nothing but light up all the lights I replace the ECT the EGR vacuum solenoid DPFE and four O2 sensors

Vehicle: 02 Taurus Ford se 3.0 ohv vin code U

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Hi there,

If replacing the EGR vacuum hasn't solved the issue, it's likely a wiring problem. Here is some more info for you.

P1409 FORD - EGR Vacuum Regulator Solenoid Circuit Malfunction

Read more: https://www.autocodes.com/p1409_ford.html

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