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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2542 (ENGINE CONTROLS - PINPOINT TEST A: NO START THROUGH PINPOINT TEST DK: ACCELERATOR PEDAL POSITION (APP) SENSOR - (EXCEPT DIESEL & HYBRID))
2004 Ford Mustang Base, 2D Coupe, 3.9 6, Automatic
Section 2542 (Engine Controls - Pinpoint Test A: No Start Through Pinpoint Test DK: Accelerator Pedal Position (App) Sensor - (Except Diesel & Hybrid))
2004 Ford Mustang Base, 2D Coupe, 3.9 6, AutomaticSECTION Section 2542 (Engine Controls - Pinpoint Test A: No Start Through Pinpoint Test DK: Accelerator Pedal Position (App) Sensor - (Except Diesel & Hybrid))
WARNING: This page does not describe the selected car, but rather 22 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
- PINPOINT TEST A: No Start
- PINPOINT TEST B: Powertrain Control Module (PCM) Power Relay
- PINPOINT TEST C: Reference Voltage (VREF)
- PINPOINT TEST DA: Intake Air Temperature (IAT) Sensor
- PINPOINT TEST DC: Mass Airflow (MAF) Sensor
- PINPOINT TEST DD: Fuel Rail Pressure (FRP) and Fuel Rail Pressure Temperature (FRPT) Sensors
- PINPOINT TEST DF: Vehicle Speed Circuit (VSC) Check
- PINPOINT TEST DG: Knock Sensor (KS)
- PINPOINT TEST DH: Throttle Position (TP) Sensor
- PINPOINT TEST DI: Direct Fuel Injection Fuel Injector
- PINPOINT TEST DK: Accelerator Pedal Position (APP) Sensor
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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.