3sgte swap , got spark, wont fire , 94 gt Options

[pxcr440]

ok so i got my harness back fron dr. tweak and everything went together fine, i went to start the car and i it wont fire, it has spark, but doesnt seem to fire, i have fuel to the rail and if you give it a small shot of startign fluid it fires right up. checked the number one injector plug and only seems to get .6 volts while cranking , risitstor pack? or ecm unhappy , anythought would be great , thank s

[lagos]

There is a ground wire from the main harness to the back of the intake manifold. Supplies ground to the injectors, ecu..etc.. make sure you connected it.

[pxcr440]

There is a ground wire from the main harness to the back of the intake manifold. Supplies ground to the injectors, ecu..etc.. make sure you connected it.

i remember putting it on but i will take it off clean it up and try it again,

[lagos]

There is a ground wire from the main harness to the back of the intake manifold. Supplies ground to the injectors, ecu..etc.. make sure you connected it.

i remember putting it on but i will take it off clean it up and try it again,

also make sure your resistor pack is connected, and that your igniter is bolted to the car (needs a ground from its casing to fire)

you can also try manually turning on the fuel pump by putting a paper clip between the te and e1 terminals in the diagnostic port. you will then hear the pump come on with the key in the on position.

also dont forget the harness plug that connects to the back of the distributor.

This post has been edited by lagos: Feb 26, 2010 - 10:05 PM

[pxcr440]

There is a ground wire from the main harness to the back of the intake manifold. Supplies ground to the injectors, ecu..etc.. make sure you connected it.

i remember putting it on but i will take it off clean it up and try it again,

also make sure your resistor pack is connected, and that your igniter is bolted to the car (needs a ground from its casing to fire)

you can also try manually turning on the fuel pump by putting a paper clip between the te and e1 terminals in the diagnostic port. you will then hear the pump come on with the key in the on position.

also dont forget the harness plug that connects to the back of the distributor.

everything is grounded, there is spark , i have fuel presure at the filter , there just seems to be no injector pulse, is it possible for the resistor pack to be faulty after sitting for awhile, like from the time the motor was pull till when i got it , , thanks for the help

[bccentaur3]

did you have a pulse tester to actually see that you are getting zero pulse?

Is the timing set up right?

[lagos]

Is the timing set up right?

Good call. If you did the timing belt incorrectly, the car wont fire.

[bccentaur3]

You should post a vid on what you cars doing when you turn it over.

[pxcr440]

the timing is right , its got plent of spark , if you shoot a bit of starting fluid in the tb it fires right up and dies , soo no fuel, anybody know the proper way to test the resistor pack

[bccentaur3]

Well if its fuel related, you checked to see if your fuel pump is working?

Did you try jumping B+ to FP on the diagnostic box?

Did you check to see if you are getting power to the injectors?

Is your EFI fuse okay?

[pxcr440]

i have cracked the lines at filter and fuel rail , and yes the pump runs and is pushign fuel, the power to the injectors with key on is only . 6 volts , efi fues appears to be good

[bccentaur3]

You sure you have the injector ground wires grounded?

A cheap fix would be, run to radioshack and buy 4 8ohm resistors from them and wire it in.

http://www.radioshack.com/product/index.js...oductId=2062288

[stephen_lee]

listen to the fuel injector while cranking the motor, if they click ur good. u do this by putting a screwdriver or anything of the like to the injector/ur ear and listen. The ECU uses GROUND SWITCHING switching for the injectors... so w/ the key on u should have a constant 12v at one of the two terminals... and the other terminal should be 0v to the positive battery terminal and anywhere between 1 and 7v with the engine cranking.

[pittfirefighter]

2nd or 3rd gen??? injectors won't fire if the AFM is not connected properly on 2nd gen

[pxcr440]

2nd gen , injectors dont have very much if any power to either side with key on or cranking

[pittfirefighter]

did you check the AFM? it has to be hooked up correctly and in good working condition for the injectors to fire... there is a kill circuit on it and the dizzy if both are not working correctly on the 2nd gen

[3sgte_kevin]

Maybe your fuel is bad. I had this happend to me and I went over every thing and at the end it was bad fuel.