P0401 Trouble
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P0401 Trouble
F150 v6 4.2L 2001 . Got the dreaded p0401 egr code up . Vehicle idles well , but seems to miss at about 20 mph . So far have changed the plenum seals , as it had a leak . Changed the dpfe . Dismantled , cleaned , and tested the egr valve with a vacuum pump , all good . Their is a slight leak on the egr tube at the nipple on the manifold . How do you check the ports in the manifold , do you have to remove the plenum again . Any suggestions , much appreciated . If you apply vacuum to the egr when idling , engine slows but does not stall .
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F150 v6 4.2L 2001 . Got the dreaded p0401 egr code up . Vehicle idles well , but seems to miss at about 20 mph . So far have changed the plenum seals , as it had a leak . Changed the dpfe . Dismantled , cleaned , and tested the egr valve with a vacuum pump , all good . Their is a slight leak on the egr tube at the nipple on the manifold . How do you check the ports in the manifold , do you have to remove the plenum again . Any suggestions , much appreciated . If you apply vacuum to the egr when idling , engine slows but does not stall .
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