1996 Buick Roadmaster Repair Question
Topics covered: Engine, Sensor, Fuel injector.
Mileage: 150,000 miles.
Mileage: 150,000 miles.
Asked on July 29, 2011
Service Engine soon light
1996 Buick Roadmaster wagon 5.7 liter engine. Service engine light came on - diagnosed as P0174 bank 2 system too lean. What could be wrong?
Asked by jimp_pattyAnswer
Replied on July 29, 2011
http://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers
Lean fuel condition could be caused by one of the following below:
1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.
