01 Explorer 4.0L codes PO171 & PO174

[SultanofSpeed]

Hey everyone. Id like to start off by say thank you for reading. Im throwing codes PO171 & PO174 "left and right bank lean" I sprayed around intake,pcv,and all vacuum lines with brake cleaner. So far the engine will not rev higher. I dont have a smoke machine so should I try engine starter which is more powerful? I also cleaned the MAF sensor. To add to this it only throws them when engine is cold and its cold outside. Once its warm it runs fine. Though at ALL times the engine seems to have an ignition miss between 40-60 if I get on it a little bit. "Bucking" Has new plugs,wire,and correct firing order. Im curious if this can be all caused by a coil pack??

Manual says -
Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection

Make a long story short what it throwing me a curve ball here is that it only runs terrible when cold. Please help and I am happy to return the favor if I have any useful knowledge

 

[swshawaii]

Wanna make a bet?

http://www.explorerforum.com/forums/showthread.php?t=314670