No Crank/Slow Crank
WARNING: This page is about a different variant/trim than selected.
- Preliminary Checks
On A/T models, ensure gearshift lever is in Park or Neutral. On M/T models, ensure clutch is fully depressed. On all models, check battery condition and battery connections. Check starter relay connections. Check alarm/anti-theft devices. Check fuses and fusible links. Check ignition switch. Repair any problems as necessary. If no problems are indicated, go to next step. - Check Starter Relay
Cycle ignition switch and listen for starter relay operation. On Econoline, starter relay is located in right front corner of engine compartment, near battery. On Excursion and F250-550, starter relay is located in central junction box. Central junction box is located behind lower left side of instrument panel. On all models, if starter relay clicks when ignition switch is turned to START position, go to step 4. If starter relay does not click when ignition switch is turned to START position, go to next step. - Check Electrical Accessories
Check if any other electrical accessories (headlights, radio, etc.) operate. If other accessories operate, go to next step. If no other accessories operate, check battery and charging system. Repair as necessary. - Check Starting System Secondary Circuits
Measure voltage drop in starter secondary circuits. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS. If a fault is present, repair as necessary. If no fault is present, go to next step. - Check Starting System Components
Check starter, starter relay, starter ground and battery cables. On M/T models, check Clutch Pedal Position (CPP) switch. On A/T models, check Transmission Range (TR) sensor adjustment. Adjust or repair TR sensor as necessary. See ADJUSTMENTS in appropriate STARTERS article in STARTING & CHARGING SYSTEMS. On all models, if no adjustment or repair is required, check for seized/hydro-locked engine (leaking injectors) or damaged flywheel. Repair as necessary.