My 4cyl Santa Fe started having issues with acceleration. When shifting form 1st to 2nd gear is the worst right now with about 2 sections of hesitation and sputtering. From there as long as I keep the RPM up around 3 the engine runs pretty smooth, however if I shift into any gear and the RPM dips to around 2 (to 2 1/2) the hesitation comes back. I am going to be replacing the spark plugs and wires shortly and I am just wondering if anyone has experienced anything similar and what else I should do before I go into the dealership.

 

P0303 = Cylinder #3 Misfire Detected
P0410 = Secondary Air Injection System Malfunction
P0446 = Evaporative Emission Control System Vent Control Circuit Malfunction

I'd have the emissions system checked first.

 

Are you sure it is not supposed to be a P-0401for EGR circuit, or a 0140 for an Ox problem ?

There is no air injection on Federal or CA emission 2.4L.

There is no 0410 in the 2.4L engine control menu on hmaservice, and I am in the dealer login portion.. no 0410 in the service manual either.