Went to go to work, started to pull out of driveway and check engine light came on so i parked it. came home after work to see if it would tell me anything and now it wont start. check engine light doesn't come on and i cant get it to give me any codes. It does turn over and the first time i tried it it sputtered but that was it. I have replaced the ecu with another used one and also replaced the main relay. this was about2 weeks ago and i have driven it several times since then. anybody have any suggestions where i should start checking?

 

Check for Air, Fuel and Fire in the combustion chamber. Engine needs all three in order to turn over. Fuel from the injectors and fire from the spark plugs are the two most common issues.

If you turn the key to the II position you should hear the fuel pump prime. You should also see approx. 35psi fuel pressure at the rail. If you hear the pump and have pressure, turn the engine over a few times and pull the spark plugs. If it they are wet with fuel, you have fuel to the combustion chamber.

If you don't have spark, test your ignition components. Coil distributor and Ignition control module (ignitor) inside the distributor, that is a common no start culprit.