Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
MKT 3.5L,
MKX 2.0L,
MKX 2.7L,
MKZ 2.0L,
Mustang 2.3L,
Mustang 5.2L,
Navigator,
Taurus 2.0L,
Taurus 3.5L GTDI, and
Transit Connect 1.6L, GO to HC13 .
For all others, GO to HC14 .
HC13 COMPARE THE PID TO THE MECHANICAL GAUGE
Note: The vehicle may exhibit a long crank until the fuel system is pressurized.
• Ignition OFF.
• Relieve the fuel pressure. Refer to the Workshop Manual Section 310-00, Fuel System for the Fuel System Pressure Release procedure.
• Disable the fuel pump.
• Ignition ON, engine OFF.
• Monitor the mechanical gauge.
• For Mustang 5.2L,
• Access the PCM and monitor the FRP (PRESS) PID.
• For all others,
• Access the PCM and monitor the FLP (PRESS) PID.
• Compare the PID value to the mechanical gauge.
• Ignition OFF.
• Pressurize the fuel system. Refer to the Workshop Manual Section 310-00, Fuel System for the Fuel System Pressure Release procedure to pressurize the fuel system.
• Ignition ON, engine running.
• Allow the fuel pressure to stabilize.
• Ignition OFF.
• Ignition ON, engine OFF.
• Compare the PID value to the mechanical gauge.
Are the PID values within 153 kPa (22 psi) of the mechanical gauge readings?
Yes | No |
|---|---|
GO to HC14 . | For Mustang 5.2L, INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of this pinpoint test. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.