Good people,

I realize this is an old thread, but didn't want to start a new one since I seem to have the rough idle and slight sputtering intermittently on my "new" 05 roadster. Happened after I changed the air filters. My son also washed the engine a bit while the cover was off. A friend came over with his scan tool and got the P0170 and P0174 error codes. See below pic I took of his scan tool.


Scan codes after stumbling ixle and sputtering under acceleration.


I will keep reading to see if I missed something from the other posts.

Any thoughts? Don't mind replacing parts, but don't want to do it mindlessly.

Also any decent scan tools out there someone could recommend?

Many thanks, John