07 h3 3.7 when it warms up it pulls lean code new air filter maf.sensor map. Sensor cleaned tb new plugs new hose under resonator fiel trim after at operating temp goes up to 32% I never had a 5 cylind e r but seems to have a slight miss I unplugged each coil as it ran seems like all cylinders are firing driving it today it pulled a o2 code bank 1 sensor 1 don't know if that's on the exhaust manifold or the one before the cat. Any ideas why the fuel trims going so high when I first started working on it there was no o2 sensor codes I bought it a week ago also seems to kinda chug some when coming to a stop notice it more in the head lights almost like Tranny staying engaged or something any ideas also ran a smoke test checking for intake leaks and didn't see any

 

Well Mikenoland2019 I see you first dug up and Old as Dirt Thread to tack on a question, then posted up a new one in the FAQ Section where it tells everyone.... "Please DO NOT POST IN THIS SECTION just because you thought up some question!!!!!! This includes all you newbs. Use the search feature and look up your question(s) first, you will most assuredly find your answer."

With that out of the way, welcome to HF.

Never a god idea to throw parts at a scanner code. Better to use the scanner info for diagnosis, then check all the easy stuff, as was in that Old Thread: The ol' P0171.

Confirm your air filter is properly in the box, confirm your intake manifold fasteners are all to proper torque, make sure you do not hear any exhaust leak. Make sure the black rubber hose under the Air Intake Resonator Box to the port at the top/back of the valve cover is not broken or cracked and leaking. Then you can think about a parts parade.

Bank 1 (I5s only have one) Sensor 1 is the first sensor from the engine down the exhaust system, Sensor 2 would be the second one down. While you are in there carefully inspect the exhaust manifold to see that all of its fasteners are in place and none has broken off.

Good luck.