Kia Troubleshooting Questions? Ask a Mechanic
Hi, welcome to just Answer. I’m Ron and I’ll be helping you today.Before we get started though, Please understand that I don't knowyour skill level or tools you have to assist us. Also understand thatI can't see, smell, hear, or touch the vehicle either, so patience isappreciated. JA is a great Q/A site, but it does NOT replace arepair shop.My goal is to make you happy and get a great rating in return formy time. Sometimes I have to give you bad news that I know youdidn’t want to hear, so please don’t shoot the messenger.
A bad mass ir flow sensor can cause this as well as bad O2 sensors.These parts are not cheap, so it would be best to attach a scan tool and check for codes and DATA related to these components I mentioned. A weak fuel pump can also cause this,so checking the fuel pressure is in order as well. Please keep me posted.