2002 Ford F150 check engine light

2002 FORD F-150
89,000 MILES • 6 CYL • 4WD • MANUAL
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BERNIEODAHL
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have had code for lean rt bank, lean left bank, also oxygen sensor reads lean left bank.....all happen when the temperature is about five above zero....have cleaned mass air flow sensor....no problems when engine warms up, seems as when it is warming up, at low idle, it is searching for correct idle speed...wonder if it could be faulty idle air valve???
Feb 19, 2009 at 5:17 PM
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