P1141 – Fuel Air Metering System Malfunction
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Symptoms
- Rough idle
- Hesitation
- Poor acceleration
- High fuel trims
- Check engine light
Causes
- Faulty injector
- MAF contamination
- Vacuum leak
- Fuel pressure issue
- ECU issue
Diagnosis
- Inspect injectors
- Check fuel trims
- Test fuel pressure
- Inspect vacuum lines
- Scan live data
Repair
- Replace injectors
- Clean MAF
- Fix vacuum leaks
- Replace fuel pump
- Update ECU