I have a 1997 Contour SE, 89000 miles. Bought it in March 2003. My CEL first came on for no apparent reason in September. I had a local respected shop check it out. They have cleaned my fuel injectors, checked O2 sensors, replaced fuel filter, you name it. The car has been in a total of 4 times now. All they manage to do is clear the codes off, then the light comes on again in a couple days.
The codes that come up are PO171 (too lean bank 1) and PO174 (too lean bank 2). They and I are completely lost. I replaced my spark plugs early last summer. The O2 sensors have been replaced, but the problem still occurs. Also, the car seems to run perfectly.
I appreciate any and all insight into this problem. Any further questions, please ask.
Thanks
