Hi everyone. I have a 2004 Vue V6 that's started having issues. It's losing power and missfiring. I'm no mechanic but I do have a reader and when I plugged it in this is what it read. p1779, p0174 system to lean, p0171 system to lean, p0507 idle air control, p2176 throttle acuator, p0300 multiple misfire, p0304 misfire detected cylinder 4, p0306 misfire detected cylinder 6.

 

How many miles on the vehicle?
When was the last time you changed the spark plugs and what plugs are you using?
What was the last time you cleaned the throttle body, including the IAC valve?
If you pull the wires off of number four and number 6 at the engine and shine a flashlight down in there, do you see oil around the spark plug or is it nice and dry?

Have you checked for vacuum leaks?

When was the last time you changed each of your two front O2 sensors?