ecu or maf?

My car has a problem I have yet to figure out. It keeps running rich and the check engine light is staying on. I have did some research and some say that the ecu is bad to go out in those cars but I also read some of the symptoms of MAF failure. It also has a hard time idling and starting. You can smell all kinds of raw gas and it is using more gas than it is supposted to. Which one do yall think it could be? PLEASE HELP ME

tell us the type of car where talking about.  when did it start what was the last mod or work you did to the car ect ect

also have you had the cel scanned

The car has acted like this ever since I got it. I rebuilt the engine about a month ago and it hasnt changed any. I did a test and it was saying like the barometric and the intake air temp. That is the reason that I think it could possibly the MAF. I also read that the ECUs are bad to go out on these cars especially at high temps. This car was in Arizona for a couple of years before they drove it back. This car has also been sitting for about four years. 

what kind of car?

Oh yeah it is a 93 eclipse GS. The damn thing has no power and will not go over 3800-3900 rpms. It just seems like it cuts itself out when you get it that high.

Mishiroxy is me. I didnt know that my girlfriend had made a account and was loged in. Sorry.

well, if you bought the car used, it could have a different computer in it. i have a 90 tsi awd that had a 92 ecu in it. my car had a rough idle, and was always runniing rich as well untill it was tuned. probably not it but just borrow a friends gs maf (must match your gs and the year) and test it to see if it fixes the problem

Im going to say MAF.

hows the cat converter and oxygen sensor ????????????

I think they are both good. The o2 sensor has already been replaced  before I bought the car and I cleaned the cat out too. I whent ahead and replaced the ecm but i cant get it started because its not getting any fire now and i have to fix that problem. I replaced the coil pack on it already but there is something else causing it not to fire. Maybe the power transistor?

  it could be the transistor.. have you checked it? this thing happened to my car before, it turned out that my mitsubishi oxygen sensor was bad and needs a replacement. 

I'm experiencing similar problems with my 2.0 GS.
I too, replaced the coil, transistor, wires, plugs, air/fuel filters, and no start for me either!
I just checked the ECU per the Haynes manual instructions, and for a CA. Car, 2.0, para. 6 states if the sweeps are constant and continuous, the ECM is OK!
I just don't feel confident that the instructions are on the money, and/or, I performed them to spec. to say the ECM is bad.
It was replaced, according to the guy I bought the car from, two years ago.
What I'm amazed about, is the fact that Chrysler/Mitsu didn't use a ECM that uses LED's to code read, instead of sweeps of an anolog multimeter's needle!
I'm scouring this site in hopes of finding info that leads me to remedy my problem. Otherwise, I just may put this little car back up for sale as soon as I get it running again, by hook or crook!
I'll then start my quest to find a commuter car, good gas economy, all over again, and focus solely on Toyotas or Hondas?

The power transistor is good i checked it just the other day. The transistor that my car has is the same as like the 91 model. But I checked it the right way. I am getting fire to cylinders 1 and 4. I thought it could just the coil that i bought bad for the number 2 and 3 but its not. I mess with the car all the time and still cant figure anything out, but im also not the best mechanic in the world. Could the O2 sensor really be the problem?