i check all, PO171 NEED MORE INFO

Question

STILL CODE COME BACK DID ALL, CHANGE 02 AND CHECK FOR INTAKE LEAKS WITH VAPOR , COULDN'T FIND ANY LEAKS INTAKE OR EXHAUST , CLEANED MASS AIR CLEAN THROTTLE PLATE AND BODY. CAR RUNS VERY WELL NO LACK OF POWER.

Answer 1

P0171 Fuel trim lean

Here is a Toyota with a 1.8 lean fuel trim vehicles runs great and had a very slight miss to the engine, it end up being a mechanical condition,,the upper radiator hose was over pressurized due to combustion seepage into the radiator. Do a leak down test and check for any air escaping into the radiator.