So I bought a 93 honda accord lately for.the past 2 months everytime.I.drive it shuts off and in the morning ill drive to take.my niece to school down the street and when I turn it off it will not start I turn the key and check engine light comes on seems like in the morning has good power until I turn off thenit runs like it loses power when I get to a stop or light the car like starts acting like power dying down then goes up then continues ive put new.sparkplugs and new.main relay . And also shut off while im.driving on the fwy streets whenever it wants