Question about 1998 Ford F150 Regular Cab
Emission test revealed a P0401 code.
As your engine wears, horrible black grunge builds up in the EGR and closes it off like an artery. The net result is .. you fail the emissions tests There are frour related items on any Ford truck to your EGR system. You must know what item is bad. The valve can be checked easily by removing it and check if it holds vacuum. Also clean the internal area with carbon build up. The solenoid, relay switch, & manifold switch can not be restored at all
Posted on May 24, 2009
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Posted on Jan 02, 2017
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