2003 Ford Explorer check engine codes

2003 FORD EXPLORER
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CKREISER
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Computer problem
2003 Ford Explorer 6 cyl Automatic 90'000 miles

I recently installed a K&N filter and intake tube on explorer. Shortly after, check engine light came on. I checked the codes with hand held OBD reader and found codes 171 & 174 ...System to lean- Bank 1 or 2. After erasing the codes, to allow for the computer to re-set ( the instal directions stated ) the same codes are coming back every 2 or 3 weeks. The vehicle runs great otherwise and the new filter has improved power and mileage. I sure hope you can help me eliminate this anoying CE light?
Mar 22, 2010 at 2:47 PM
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JACOBANDNICKOLAS
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A lean mixture is usually the result of a vacuum leak. Did you have to remove any when you installed this? Also is the maf sensor still connected?
Mar 22, 2010 at 3:29 PM
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CKREISER
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Maf. sensor was re-installed and vacuum hose to intake received new clamps. Is there a way to clean the maf. sensor, or should I buy a new one?
Mar 23, 2010 at 8:13 AM
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JACOBANDNICKOLAS
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Yes the maf can be cleaned. They actually make a special cleaner just for them. Most parts stores will have it.

Let me know if it helps.

Joe
Mar 23, 2010 at 2:36 PM
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