so tonight i was on my way to drop my girlfriend off and my engine started to act up(no light yet) as soon as i hit 4 grand my car starts to misfire and doesnt want to go. so we sat for a few seconds then it ran fine. i thought it would be bad gas since i had just got gas 10 miles ago. then it happened again and no message on the dash. it has good power till bout 4 then acts up. on the way home it did it again then the light stayed on. it seems to rn fine till i step on it. so what should i do or look for. any suggestions or has anyone else had similar problems. thanks in advance...

 

Are you running the correct fuel grade? Take it in to autozone or somewhere that does free OBDII scanning.

 

running 93 oct marathon