Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2004MUSTANG BASE, 2D COUPE, 3.9 6, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - THEORY & OPERATION - CNG, FLEX-FUEL & GASOLINEPCM INPUTSDIFFERENTIAL PRESSURE FEEDBACK EGR SENSOR
2004 Ford Mustang Base, 2D Coupe, 3.9 6, Automatic
Differential Pressure Feedback EGR Sensor
2004 Ford Mustang Base, 2D Coupe, 3.9 6, AutomaticSECTION Differential Pressure Feedback EGR Sensor
For information on the differential pressure feedback EGR sensor, refer to DIFFERENTIAL PRESSURE FEEDBACK EGR SYSTEM .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.