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Old 04-22-2013, 05:01 PM   #1
towiseman
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Join Date: Jan 2010
Location: los angeles, California
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codes 171 and 174

I have P-0171 and P0174 on my 2001 E150. Changed MAF, checked and cleaned EGR, changed DPFE, checked for vacuum leak with smoke and still the service engine with codes 171 and 174 comes on. What else to look for??????
Please help. I will need to get smog check soon. Thanks
towiseman@yahoo.com
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