Question about 2001 Ford Explorer Sport Trac
You probably have a vacuum leak somewhere along the PCV hose. The rubber elbows on these hose lines rotted from the oil vapor and split. Carefully inspect all the lines, even under the intake plenum. This problem was so common I can pratically guarantee this is what is wrong. You can use a can of aerosol carb cleaner to spray at areas that are hard to see or reach and if it causes a change in idle speed it will help to pin point the location of the leak.
Posted on Jan 02, 2011
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Posted on Jan 02, 2017
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Jan 09, 2016 | Cars & Trucks
May 23, 2011 | 1998 Ford F150 Regular Cab
P0174 - Fuel Injection System Too Lean Bank 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption Possible causes - Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem. Bottom line possible defective Mass airflow sensor and or O2 sensor in cylinder bank number two.
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