Mechanics

FORD EXPLORER SENSOR PROBLEM

1998 Ford Explorer • 135,000 miles

Using actron diagnostic alarm code reader I got a 171 and 174 alarm system to lean bank 1 and bank 2. Truck runs rough at idle but ok when driving. Could it be 02 sensor or fuel injector
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Guest
January 19, 2013.




Low fuel pressure, vacuum leaks, mass air flow sensor and pcv are the common causes

Roy

ASEMaster6371
Jan 19, 2013.


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