F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
8. Remove the nut and disconnect the brake booster vacuum tube and bracket.
9. Remove the exhaust manifold to EGR valve tube.
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Disconnect the exhaust manifold to EGR valve tube upper fitting.
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Disconnect the differential pressure feedback EGR system electrical connector.
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Disconnect the exhaust manifold to EGR valve tube lower fitting.
10. Disconnect the following electrical connectors:
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idle air control (IAC) valve.
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throttle position (TP) sensor.
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EGR vacuum regulator solenoid.