still...a low idle

[allroy1978]

I just had my valve cover gasket changed along with new plugs and wires. A couple days later the check engine light came on reading a p0171. After about 15 seconds at idle the RPMs lower to about 500, nearly stalling. I cleaned the MAF sensor, checked for leaks, ran injector cleaner, and changed the PCV. Any ideas? Thanks!!!

 

[JohnBoy1]

No ideas really, my 06 does the same thing. When it wants to try to idle real low i blip the loud peddle and it jumps right up. Ive done the bg kit to and it stils does it.