2002 Ford F-150 XL 4.2L Surge, Poor Fuel Economy, MIL Lamp on
Vehicle came in running rough at times with lean codes. Customer had already installed new upsteam o2s, maf, iac valve and intake gaskets with new bolts/isolaters. STFT both banks max out to +33%, at idle and no change off idle(1500rpm+), indicating no vacuum ...
Summary posted 11/6/2012
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Vehicle Data2002 Ford F-150 XL
Trouble Codes
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Message Closed w/Summary
Vehicle Data
2002 Ford F-150 XL
VIN | 1FTRX07232 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 5-speed Standard |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Surge, Poor Fuel Economy, MIL Lamp On |
Occurs | Always |
Trouble Codes
P0171 | Fuel System Too Lean (Bank 1) |
P0174 | Fuel System Too Lean (Bank 2) |
P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction |
P1151 | Fuel Rail Pressure - Maximum Positive Deviation |