Engine Performance problem
2001 Ford Ranger 6 cyl Four Wheel Drive Automatic 66500 miles
Check engine light comes on. The code was PO175 -- too rich. Replaced one of two oxygen sensors, downstream from cat converter. Reset, now the error code reads the opposite, PO171, too lean. Only problem noticed is at startup it kind of acts like it's choking to keep running. Other than that seems to run OK. Replace other sensor, upstream from cat convertor? Perplexed. Thanks!
have the same problem?
Wednesday, March 24th, 2010 AT 2:33 PM