Question about 2000 Ford Expedition
The mass air flow sensor is in the air intake between the filter and throttle body. The filter is in one half of the air box and the sensor is in the other. You should have a wire harness running out the bottom and a connector toward the top. When you split the chamber to access the air filter, tip up the half to your left and you will see it. Sometimes you can get by with cleaning it, but you may not have a permanent fix. You must ONLY use a cleaner that does not leave ANY residue, such as brake cleaner. Make sure the connector is fully engaged, and check for bent or pushed back pins. Sometimes the pin locks in the hardshell were never fully engaged and the pin connectors push out the back of the plastic hardshell connector. Hope you save some cash on this one. I realize how costly repairs are these days. Well wishes.
Posted on Sep 13, 2009
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Posted on Jan 02, 2017
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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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