2014 accent, sedan, 1.6l.Owned from new. issue from out of the blue. Starts okay but revs stay between 600 -1000. Press accelerator to the floor it will, run rough, shake and shudder then cut out. Mobile mechanic diagnosed a bad fuel filter- maybe pump and sender unit... Replaced $770.00. Problem persisted. No change. Compression checked- all cylinders are good. No oil/coolant mixing. Next suggestion - MAP sensor... Replaced - no change, problem persists. Maybe bad fuel, tank was a quarter, filled up with fresh fuel and fuel system cleaner- no change. Injectors replaced - no change. Now talk of air intake gasket replacement. Initially No Error codes. One was displayed "too rich". That was a one off and has not returned despite the issue persisting. Any assistance appreciated

 

Do you remember what the code was? If so, can you post it here?

There is a specified sequence of what is supposed to happen and there could be several reasons for the "TOO RICH" problem. The code can provide some direction..

 

Thanks Hanky, The code was P2188.