My car will not start and then it will.but will not stay stared what can I do!!!

the most common crank but no start problem on the Acura/Honda vehicles from the 90's up to somewhere in 2005 or so is the main relay,sometimes called the fuel pump relay(usually when it's hot it won't start,only cranks,then when it cools off it will start. cold solder joints on the circuit board inside the casing sometimes makes contact and sometimes not,preventing the car from starting. replacing the relay corrects this problem. does not look like a regular under hood relay. google part number 19257 for a picture. this relay controls spark and fuel.