Aspen03
Full Access Members
These 2 codes just popped up this evening on my way home from the grocery. I have no running issues (stumbling, roughness, miss, etc), no impact to mileage, starts normally, acceleration/power is normal.
Any clues as to what might throw these? It is a 2003 EB 5.4 4x4. Scheduled maintenance is up to date and no other known issues as far as motor goes. Current sitting at 241506mi.
Vacuum looks good on scan tool so I figure the next logical place to check is MAF though I don't expect it to be dirty, it was cleaned and a motorocraft air filter was put in just before winter. I did pull the tubing off just to clean crap off everything so it's possible something post MAF isn't sealed or has come loose. Motorcraft fuel filter has maybe 10k on it and no odd noises from fuel pump.
I'll probably drive the Navigator to work tomorrow and dig into this on my days off Wed/Thurs as well as look into the suggestions from my other thread about a vibration.
Any clues as to what might throw these? It is a 2003 EB 5.4 4x4. Scheduled maintenance is up to date and no other known issues as far as motor goes. Current sitting at 241506mi.
Vacuum looks good on scan tool so I figure the next logical place to check is MAF though I don't expect it to be dirty, it was cleaned and a motorocraft air filter was put in just before winter. I did pull the tubing off just to clean crap off everything so it's possible something post MAF isn't sealed or has come loose. Motorcraft fuel filter has maybe 10k on it and no odd noises from fuel pump.
I'll probably drive the Navigator to work tomorrow and dig into this on my days off Wed/Thurs as well as look into the suggestions from my other thread about a vibration.