Stalls Or Quits On Acceleration, Cruise, Deceleration Or Idle
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
- Preliminary Checks
Ensure engine oil level, engine oil filter (FL-1995), oil API rating (CG4/SH) and viscosity are correct. Check all engine electrical connections. On A/T models, ensure ATF level is correct and torque converter clutch is operating correctly. On all models. ensure engine is not overheating. Repair any problems as necessary. If no problems are indicated, go to next step. - Check For Cold Weather Stall
If engine restarts after stalling with engine oil temperature less than 32°F (0°C), oil return to oil pan may be too slow. Ensure proper oil viscosity is being used for cold weather conditions. Change oil if necessary. If proper oil viscosity is being used for cold weather conditions, go to next step. - Check For PCM Reset
If a PCM reset occurs, the following conditions will be present:- Engine will momentarily stumble.
- PCM will go through a normal key on cycle.
- Glow plug lamp and glow plugs will be turned on.
- Accelerator pedal position validation will be attempted.
- Pedal authority will not be allowed by PCM until accelerator pedal is released and engine returns to idle.
If any of these conditions are present, go to TEST ME: PCM RESET under SYSTEM TESTS in SELF-DIAGNOSTICS - 7.3L DIESEL article. If none of these conditions are present, go to next step.
- Check Engine Performance Diagnosis
Perform ENGINE PERFORMANCE DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 7.3L DIESEL article. Repair as necessary. On M/T models, if no fault is present, test is complete. Return to SYMPTOM DIAGNOSIS if a symptom still exists. On A/T models, if no fault is present, diagnose possible transmission problem by symptom. See TROUBLE SHOOTING in appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.