I have a 06 Kia Sorento,130k miles.
In the past 2 months we’ve replaced the cam shaft sensor, alternator, spark plugs, valve cover gasket and all the vaccum hoses on the upper plenum. We just got it back from the garage on Thursday for it to start acting up again yesterday. Its shuddering like its misfiring again, but only momentarily before it goes back to normal. There is no CEL on as of yet, the battery and brake lights flickered yesterday but are off today. I’m at loss as to what the issue could be except maybe a wiring issue to the alternator or a vaccum issue. Any ideals?