Just what the title says. I replaced the wire harness, replaced the dizzy, checked all grounds, check the ECU with another working one, all fuses are good, and tried 3 different main relays.
Im getting fuel to the rail and im getting spark, but the injectors what fire. So i switched the injectors and still wont work.
I have searched the site for more information and did everything I have read...Now im about to give up..smh...anyone have any ideas...please!

 

Start with giving us a little back round of the car and the history recently that led up to you replacing all these components and thus changing the injectors to 1993 LX injectors.

 

well car was running fine. Then it spun a rod. Engine was removed and then redone.... the same injectors were used.. since they didnt fire, i changed bought some more and still the same problem..the same wire harness was used, but since it wasnt turning over i bought and replaced it..and still the same problem...thats the history

 

i know that the thermostat ground is always a problem. I have checked that but i wonder if its making good contact since i painted the block? can that be an issue?

 

Yes sand all ground points till its bare metal!!

 

... and clean off the areas of the block where the thermostat housing mates to the block. Grounds do not work through paint.

 

OMG!! Im completely lost now...I have done everything i think..I cleaned all the grounds, changed the main relay twice, swapped ECU twice, changed injectors twice, changed ignition switch, swapped dizzy twice, changed engine harness..im lost...Damn injectors will not pulse..Fuel is getting to the rail pressure is good and plenty of spark...idk what else to do...HELP!!!!

 

You'll probably need to start testing to narrow down where the cause may be. The ECU supplies the ground to the injectors. The main relay supplies power to the injectors.

Measure the voltage on the Yel/Blk wires going to the injectors when you try to start the car. If there is battery power on those wires, then power is coming through the main relay to the injectors.

Test for continuity to ground on the injector wires coming from the ECU.

If the ECU is not sending the ground signals to the injectors, then check that power (+) and ground (-) are going to the ECU. With the ignition switch at START, there should be power at the Yel/Blk wires at terminal pin no. 1, pin no. 5, and pin no. 13 of Connector C405 (16 pin gray connector) at the ECU. Check for continuity to ground at terminal pin no. 12 and terminal pin no. 25 for Connector C404 (26 pin gray connector) at the ECU.

 

Was the engine replaced or rebuilt? If rebuilt, is the timing set correctly??

 

yes it was...but that's a good suggestion..im going to check the timing marks tomorrow