P1142 – Fuel Air Metering System Low Input
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Symptoms
- Rough idle
- Hesitation
- Poor acceleration
- High fuel trims
- Check engine light
Causes
- Faulty sensor
- Vacuum leak
- Wiring issue
- Fuel pressure issue
- ECU issue
Diagnosis
- Inspect wiring
- Test sensor voltage
- Check vacuum lines
- Scan live data
- Test fuel pressure
Repair
- Replace sensor
- Fix vacuum leaks
- Repair wiring
- Replace fuel pump
- Update ECU