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1998 Ford F-150 4.6L Surge, Poor Fuel Economy, MIL Lamp on, Spark Knock
Customer complaint is poor fuel economy and spark knock. Also has noticed a surge when cold. We cleaned the MAF and reset adaptives and had no change,way negative at idle and way positive while driving. MAF was very dirty. Fuel pressure and volume seemed norma...
FIX posted 11/5/2003
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Message Closed w/FIX
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11 Replies Received
11 Replies Received
Related Documents & Media | VIN | 1FTZX1W2WK |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Surge, Poor Fuel Economy, MIL Lamp on, Spark Knock |
| Occurs | Always |
| Misc. | 4X4 |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0172 | Fuel System Too Rich (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
| P0175 | Fuel System Too Lean (Bank 2) |
| P0401 | EGR System Insufficient Flow Detected |
Message Closed w/FIX
Vehicle Data
1998 Ford F-150
| VIN | 1FTZX1W2WK |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Surge, Poor Fuel Economy, MIL Lamp on, Spark Knock |
| Occurs | Always |
| Misc. | 4X4 |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0172 | Fuel System Too Rich (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
| P0175 | Fuel System Too Lean (Bank 2) |
| P0401 | EGR System Insufficient Flow Detected |
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