So i just got everything hooked up on my lq4 and it cranks over and is getting fuel but not getting spark. I have the edelbrock intake and edelbrock ls swap box thing. What are some things i can test, i have no idea why its not getting spark.

Main power and ground are good(tested those)

Thanks in advance.

update: Did some more testing. i was only getting 4v to the box when cranking.

Im going to charge the battery and see what happens. Any other ideas?

 

If the starter is strong there is nothing wrong with your battery. I assume you have the ignition box tapped into the 3rd gen main IGN wire?

 

No i just found a keyed hot wire. whats the main ign wire? the one going to the purple one going to the starter?

 

The main IGN wire is a large pink wire coming out of the C100(large bulkhead connector on driver side firewall. I would try using that as your Ignition power.

https://www.thirdgen.org/forums/ltx-...formation.html

https://www.thirdgen.org/forums/ltx-...rt-finish.html

Pocket's got ya covered

 

Alright ill try switching it to that tmo.

Anyone else got ideas if this doesntwork?

 

People sometimes tap into Accessory circuits for their fuel/spark/PCM power which leads to this problem...improper voltage during cranking.

 

Oh and in case you haven't seen it already this thread will probably be a bit more informative.

https://www.thirdgen.org/forums/ltx-...p-3rd-gen.html

 

The wiring did it. I moved the pink wire to the main ign of the car and it fired right up! awesome thanks a ton guys.