Its a 2.5 1998 what causes this code? What could i try to fix it?
Tom
Tom
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P0171
- Thread starter brwntom
- Start date
JC 97
Well-Known Member
- Joined
- Jan 12, 2010
- Messages
- 454
- City
- Mi.
- Vehicle Year
- 1998
- Transmission
- Automatic
- Total Lift
- 4" suspension
- Tire Size
- 31x10.5
Straight from chilton manual.
Trouble Code Conditions:
Engine started, engine running at cruise speed for 3 to 4 minutes, and the PCM detected the Bank 1 Adaptive Fuel Control System reached its rich correction limit (a lean A/F condition).
Possible Causes:
■
Air leaks after the MAF sensor, or leaks in the PCV system
■
Exhaust leaks before or near where the HO2S is mounted
■
Fuel injector(s) restricted or not supplying enough fuel
■
Fuel pump not supplying enough fuel during high fuel demand conditions
■
Leaking EGR gasket, or leaking EGR valve diaphragm
■
MAF sensor dirty (causes PCM to underestimate airflow)
■
Vehicle running out of fuel
Trouble Code Conditions:
Engine started, engine running at cruise speed for 3 to 4 minutes, and the PCM detected the Bank 1 Adaptive Fuel Control System reached its rich correction limit (a lean A/F condition).
Possible Causes:
■
Air leaks after the MAF sensor, or leaks in the PCV system
■
Exhaust leaks before or near where the HO2S is mounted
■
Fuel injector(s) restricted or not supplying enough fuel
■
Fuel pump not supplying enough fuel during high fuel demand conditions
■
Leaking EGR gasket, or leaking EGR valve diaphragm
■
MAF sensor dirty (causes PCM to underestimate airflow)
■
Vehicle running out of fuel
adsm08
Senior Master Grease Monkey
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- 1987
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- 4.0 V6
- Transmission
- Manual
- Tire Size
- 31X10.50X15
That about says it.
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