I have a 1991 eclipse 1.8, It is getting fuel to the injectors and injectors are clean and have been replaced. I was wandering what tells the injectors to open? PLZ help me out

 

The ECU does.

So, check your wire harness and all that. Might be the ECU

 

Where is the ECU located on this car, under dash or under the hood?

 

I believe it is behind the glove box. However this may not be what is causing the problem.

So your saying the injectors are not pulsing?

Do you have spark?

 

yeah got spark it wants to run on ether and it ran one day then tried to start the next day and it wouldnt start i replaced the fuel pump so its getting plenty of fuel but the injectors are not letting it into the cylinders.

 

might be a timing issue. Maybe a bad Crank position sensor, orcam position sensor

 

Wants to run.... uuuh oooh.

Timing belt

 

sounds like my problems as well.

I too, started with changing out parts before knowing exactly the trouble source, which is what the ECU is supposed to tell you when you do the check for codes?
The ECU should be under the center console? The diagnostic port, is next to the fuse box under the dash on the driver's side, it should be white in color, but, with a black plastic boot cover. It's approximately 2.5" long, 3/4" wide, you should be able to find it with little trouble!
The ECU, is another story, being under the console, I have yet to try its removal, but, the "Haynes" book details it somewhat!
If you learn what your problem/solution is, please post up!

 

TheEngineer, you took the words right out of my mouth.. my car did the same thing, it started once then wouldnt start again. More that likely timing, your spark plugs might be firing either too soon or too late, wich will make it so the fuel wont ignite.