I just recently got my car back from the mechanic because I got a short circuit in my ECU. I have had it for 5 days and today it turned off on me when i accelarated. Now the engine just wont start, it feels like it wants to start but just wont tur. I just changed the spark plugs, ignitor, ecu, fuel pump and filter and sensors and now i dont know what to do...any suggestions?