Crankshaft position sensor signal is implausible — affects ignition timing and injection.
SYMPTOMS
- Check-engine light
- Hard start
- Stalling
- Intermittent cut-out
LIKELY CAUSES
- Failing crank sensor
- Wiring fault
- Damaged reluctor/tone ring
- Incorrect air gap
DIAGNOSIS STEPS
- Scope the signal while cranking
- Inspect tone ring and air gap
- Check wiring and connector
RELATED PARTS
- Crankshaft position sensor