go with the cheapest thing first and fix that and if it doesnt work go to the next thing , here is my help.... try replacing the coolant temp sensor and if that doesnt work then its in your favor that the ecu isnt bolted from the last time i was trying to run a diognostic on it and run the flashing codes from the ecu so you are welcome for that there was some starting problem with the car that had never been fixed it comes and goes we never knew what it was and had several people take a llook at it. i tried replacein the following things on it and that didnt change what it did------ coil,spark plugs,ecu,plug wires,maf, recheck those if you would like