Hey, This 2011 civic LX has no codes up. Accelerates fine during warm up phase(rich mix). When fully warm, it will stumble/hesitate when accelerating slowly between 15 and 20 mph. Ran 3 different brands of injector cleaner through. Changed plugs (only 45k but you gotta try) no improvement. Cleaned MAF sensor, new air cleaner. Acts like its not getting quite enough fuel. Accelerates fine if I don't try to accelerate slowly. Any ideas on this odd one?
Thanks for reading

 

maybe a tps issue?

 

Did you switch fuel vendors recently or is this a 'not so recent' occurrence? You could have bad gas...

 

Hey, thanks for responses.....problem has existed since last fall. Have used numerous brands of gas. As Far as the throttle position sensor, I thought if it were bad it would throw a code??? is that not correct?? Thanks