inspection

1999 FORD FIVE HUNDRED
208,000 MILES • 6 CYL • FWD • AUTOMATIC
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HJ
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I have a 1999 ford windstar that is getting codes for system lean bank 1 and bank 2 I have cleaned the mass airflow sensor do I need to replace it or oxygen sensors
Dec 13, 2010 at 7:19 PM
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WRENCHTECH
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No, you need to look for a vacuum leak. Listen for a hissing noise and try to follow it to it's source. They are notorious for sucking holes through rubber fittings and hoses.
Dec 14, 2010 at 6:41 PM