System Too Lean (Bank 1)
Rough idle, Hesitation/stumble on acceleration, Higher than normal idle, Possible hissing sound
| Job | Range |
|---|---|
| MAF sensor cleaning (DIY) | $10–$20 |
| MAF sensor replacement | $80–$220 |
| Vacuum leak repair (hose/gasket) | $30–$200 |
| Fuel pump replacement (shop) | $300–$700 |
These percentages are general patterns, not a diagnosis for your specific vehicle. Have a technician scan your car to confirm which component is actually failing.
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