I have an 04 Armada (same motor as a titan) and have 70,100 miles on it. Last week I replace the air filter with a fram air filter. 3 days ago I have had my "Service engine soon" light go on and my gas mileage is terrible and very noticeable. I took it in to an auto parts store to get the code read and it is a P1279 code (Fuel /Air metering) or a air/fuel ratio Sensor. I looked again at the air filter box and i did see orange from the air filter and noticed that it was not completely installed correctly. I have taken off the clamp and totally removed and re installed the air filter and air box. I now see no orange at al from the air filter and I am 100% sure that the air box is installed correctly, and no wires or sensor connections are off or loose.
I have a pretty good knowledge of auto motors but with all of the sensors now days, I dont know where to start looking with out some tutelage.
the parts guy told me that the air box couls be totally removed and still not give me a code or a "SES" light, but I think he may be wrong.
I have not driven the truck yet but will tomorrow.
Could this air filter and air box not being totally sealed cause a p1279 error code?
If not where do I look now??
If I take it in I know they will just start replacing parts untill the code is gone
I have a pretty good knowledge of auto motors but with all of the sensors now days, I dont know where to start looking with out some tutelage.
the parts guy told me that the air box couls be totally removed and still not give me a code or a "SES" light, but I think he may be wrong.
I have not driven the truck yet but will tomorrow.
Could this air filter and air box not being totally sealed cause a p1279 error code?
If not where do I look now??
If I take it in I know they will just start replacing parts untill the code is gone