Just bought a eprom ecu for my 2g. I took of battery cable, then removed the stock ecu and installed the eprom ecu, then hooked battery cable back on. Went to start the car and it turns but never starts. I then reversed everything and put stock ecu back in and car started fine. Then i installed the eprom again and took off the plugs to the injectors and went to start it and still turns but never starts. Plugged the injector plugs back in and tryed to start the car and it turns but never starts. Any clue on why the car will not start up?

Would the stock 1998 alarm have anything to do with the stock ecu and eprom ecu?
just trying to bounce some ideas of you guys to try and figure out why the eprom isnt letting me start the car

The motor is a 6 bolt btw

 

What year is the ecu?

 

2g Eprom (95')

 

Well of course its not gonna run when you unplug the injectors...I don't know the point of doing that but maybe you're thinking of the fact that the injectors fire in a different order on the later model years? Hence the swapping of the injector trigger wires on the ecu harness..

Anyway, look at the Check engine light with the factory 1998 ECU in place, key turned to on, motor off. It should be on if it's working correctly. Now turn it off and take out the ecu, swap in the 1995 EPROM and put the key to on with the motor off. If the ECU is powered up and working correctly, and the CEL wire is intact it should light up. If not it sounds like you have a dead ECU. I'm having the same issues with an Evo 8 ecu swap and after going over all the wiring I'm thinking its dead as well.

BTW if you need a working EPROM ECU I have one in my car running right now, I will trade + cash for the plastic 98 ecu... LMK.

 

I have a good eprom i just bought tuned by jestr tuning in orlando. I just need to make sure all the wires are ok under the hood. since its a 6 bolt motor and a 95 eprom ecu would i need to change the firing order? what should the firing order look like on the head and on the coil pack? Thanks for the replys
(would this sound right?) Found this post off of dsm tuners

OK, ### you should do is make sure your timing is right.
Next you use arange the wires in
4123
and the block cylinder order is
4321.

the order for the wires switches as follows.
4 with 2 and 1 with 3.
the new order is
2341.
and you're all done.
and all you need is to start'er up and good to go.

 

Update i switched the firing order from 4-1-2-3 To 2-3-4-1... And the car started for a very quick second and then died right away. there is a extremely loud ticking noise under the dash while trying to crank over only while the eprom ecu is installed. would this be there correct firing order? I have a full 6 bolt swap inside a 1998 eclipse . let me know what you guys think. also i switched the wires to 3-2-1-4. Car started with very low rpm and died in about 2 seconds.

 

go to dsmlink's site
they have what you need to do or change to get the car started...

 

sounds like the ecu may be bad. the relay clicking is common to failing ecu

 

Sent back the ecu. It had to be the problem, its currently getting checked so I will find out monday when i get the ecu back.