On 3 occasions, was accelerating on interstate (after entering from ramp), check engine light began blinking, car shook terribly & went into limp mode — gas pedal was to the floor but car continued to lose power. Had to pull off road — turned car off, waited 20 minutes, turned car back on — check engine light went off & car was drivable. Another time, while accelerating on interstate, check engine light started blinking & all warning lights came on flashing. Car began losing power — had to pull off on side of the interstate — car was towed to the dealership. Another time, was pulling off from a light on highway — I accelerated, check engine light began blinking, car shook terribly & went into limp mode, requiring me to pull off on side of the highway — turned the car off for 15 minutes — turned it back on, light was off & was able to drive car. Most recent incident — was accelerating on small, 2 lane highway — check engine light began flashing & car shook terribly but didn’t go into limp mode — otherwise behaved as before. Each time, took the car to the dealer ASAP to report problem. First time, was told they had to fix broken tail light b/c it was throwing off system & they couldn’t get a computer reading. Once done, was told that they got a ‘CYL2 Miss Fire Code. Performed diagnosis on code. Diagnosis led to improperly adjusted valves. Performed valve adjustment. Found half of valves loose and half tight.’ Was road tested — no further concerns noted by dealer. Other times, was told that computer wasn’t showing any codes. Last event literally happened in front of Advance Auto — pulled in/hooked up to check code — indicated a Cyl 2 misfire. Took to dealer — said no code showing — berated me for having checked @ Advance — said it erased any codes, even though I told them the code that was noted. This is a serious safety issue due to car going limp when accelerating on interstate where others are going 70-90 mph. Dealer says nothing they can do d/t no code showing.