I've got a code of p0174 Lean bank 2. So far I've checked and replaced pcv valve, changed gas filter and ran fuel injector cleaner. Any suggestions? The truck feels like it has no power and it knocks and pings under load.

 

You don't have a MIL ?

Clean the MAF , then re-boot your computer first .

http://www.fordf150.net/howto/clean-...low-sensor.php

 

What is a MIL? Thanks for your response.

 

Malfunction Indicator Lamp (MIL) / Check Engine Light

 

jbrew..
Thanks for the info. This morning before I went to bed I did exactly what was prescibed. Cleaned the MAF with contact cleaner and reset the computer. So far so good. The knocking and pinging is gone. I took it on the highway and stomped it pretty good. I did noticed quite a difference.

One thing I did notice though was that the wires on the sensor looked cleaner on the back side. Even after I sprayed the the hell out of them with contact cleaner the wires were still darker on the side where the air hits. They did lighten up though. Would that be build up from oil from the K&N?

Thanks
Rob

 

Glad it's runnin better - I use a Q-tip on the wires , but be very careful , they break easy ..