Thanks for the reply it really helped me. So based on my understanding its gonna be this way : I will buy a used ECU(MR578508) and give it to my mechanic directly (ie without reprogramming/flashing ECU unit). Then get the Keys reprogrammed.
So would he (mechanic) be able to start the car ? I mean to say that if its the same ECU(MR578508) I dont have to get it reprogrammed ?
So from this I understood that the mechanic will only have one chance to see if the spark has been restored and if the ecu is working coz in the next turn it wont have the starting fluid to start the engine. Then he has to get the key reprogrammed.
If the spark has not been restored it means that there is some other issue.
Sorry for the late reply, my car is working with the new used ECU but the service engine light is on and the car is vibrating a lot. what you think the reason is? Also in the process of replacing the wiring harness they broke my dashboard cover, can you tell me if 2002's MITSU Eclipse spyder GS dashboard can be replaced by 2003's ?
I will close this question after this.
I have had a got a few parts from junkyard but couldn't find the Dashboard.
I am not worried about that coz there is major issue again. The car is overheating , after replacing the ECU I drove it for at least 50 miles and it ran fine without any problem. But this one day I was at a signal and then all of a sudden I saw smoke coming out of the bonnet and inside the car(the smoke was white). The indicator was at the maximum level heat. I thought that this is happening bcoz there is no coolant in the car and I filled it up,but even after that it did the same thing. I stopped the car few times in between to cool the engine down and reached home.
I dont know what is it this time? Is it a ECU problem or wiring harness problem or thermostat ? The smoke was coming from behind the engine. Can you suggest me what problem it might be and how expensive this is gonna be?
The smoke was coming inside the car from the broken parts of dashboard , the A/C system was off completely. I didn't see any residue on the visible parts but it did had a little moisture when I switched off the engine.
I am sure that the smoke was coming from beneath and behind the car engine. Everything was fine around the radiator area , I didnt see any smoke in that area. Also I don't know if this will help but after all the repair the A/C system has stopped working properly, the heater is working fine but doesn't cool the air.
One more thing came to my mind after reading your reply that there was a sound like something is getting boiled ( like water or some liquid) whenever it gets over heated. Then it started giving out the smoke.
I didn't see any splatter stains coz it was from underneath the Engine where thermostat & wiring harness is placed.
Only when it reaches to HOT level.
Take your time Doug.
The exhaust is normal , no smoke at all. Yes the radiator hoses gets very hot. Yesterday I filled the whole radiator and reservoir tank with coolant while the engine was running. I saw there was a very little smoke from the radiator when it was full with coolant, I thought the radiator fans would turn up automatically if its getting heated up, I waited to see if they will turn on automatically but it didn't (may be its some connection problem ). Then I drove for 5-6 miles, it ran fine without over heating. I think has something to with the A/C connection and thermostat.
Finally I dropped it at a Mitsubishi dealer for repair. Also what you suggest me on should I keep this car or get rid of it? Its doesn't have many miles on it (80k approx).