Boosted Ls1 240sx (Not starting)

[LS1 240sx]

Hi guys, Trying to get this ls1 started, In the scanner under as far as codes go it gets crankshaft re-learn, now Ive seached and searched and found that its in bi-di controls but hw do you get to those settings, here's my setup:

-ls1 shortblock (camaro)
- 317 heads w/ comp 918's
- MLS and arp head studs
- aftermarket fuel rails
- 120lbs injectors (lucas)
- aem injector driver
- 76mm turbo
- tial mvs
- ati dampner pulley
- 2004 GTO 5.7l pcm
- ls1 corvette harnes pinned to gto.
- camaro TB
- th350 Built by JW.


The car cranks but no turn on, Im by myself so I cant check for spark, fuels there but dont know if injectors are firing.

Heres my tune I have hp tuners pro w/ mpvi controller and 3bar map sensor.

Any help would be greatly appriciated. Also I have found my flow rate calculator, so I still havent put that in yet.

[Google]

Hi guys, Trying to get this ls1 started, In the scanner under as far as codes go it gets crankshaft re-learn, now Ive seached and searched and found that its in bi-di controls but hw do you get to those settings, here's my setup:

-ls1 shortblock (camaro)
- 317 heads w/ comp 918's
- MLS and arp head studs
- aftermarket fuel rails
- 120lbs injectors (lucas)
- aem injector driver
- 76mm turbo
- tial mvs
- ati dampner pulley
- 2004 GTO 5.7l pcm
- ls1 corvette harnes pinned to gto.
- camaro TB
- th350 Built by JW.


The car cranks but no turn on, Im by myself so I cant check for spark, fuels there but dont know if injectors are firing.

Heres my tune I have hp tuners pro w/ mpvi controller and 3bar map sensor.

Any help would be greatly appriciated. Also I have found my flow rate calculator, so I still havent put that in yet.

1st change your Dynamic Airflow High RPM Disable to 12800

2nd P1626 set to 3 no error reported

It should start with #2 corrected..




.

[LS1 240sx]

Changed, but no start.

[LS1 240sx]

and for some reason scanner wont connect.

[Google]

Changed, but no start.

You need to check your powers and grounds.. wiring to the cam and crank sensors, coils, and injectors..


Sounds like a wiring issue..

[edcmat-l1]

Crank relearn will never ever cause a no start condition.

Go back to the basics. Do you have fuel pressure? Do you have crank sensor pulse (RPM signal on your scanner while cranking)? Do you have injector pulse and spark? Does it pop and spit or does it do nothing?

Too many people come on and ask for tuning help for no start conditions and overlook the basics needed for operation. Theory always is it's tune related, and 9 times out of 10 it's not.

PS got a data log of it cranking? RPM, inj pulse, etc?

[LS1 240sx]

Crank relearn will never ever cause a no start condition.

Go back to the basics. Do you have fuel pressure? Do you have crank sensor pulse (RPM signal on your scanner while cranking)? Do you have injector pulse and spark? Does it pop and spit or does it do nothing?

Too many people come on and ask for tuning help for no start conditions and overlook the basics needed for operation. Theory always is it's tune related, and 9 times out of 10 it's not.

PS got a data log of it cranking? RPM, inj pulse, etc?

I have fuel pressure 58 psi. I would have to crank it again while scanning to check crank pulse.

It doesn't pop or spit nor do you smell at any type of fuel. Im going to be bringing a friend over that I can check spark from the coils and injector pulse with a test light while the cars cranking.

Doesnt the crank sensor send ignition signal when triggering the reluctor wheel? or was I just filled with wrong info in my head?

[LS1 240sx]

Question. I know you have to have some grounds on the motor but do all the grounds from the harness have to be on the heads or can some go to chassis? I think that might be and if it is boy do i deserve a smack in head.lol

[LS1 240sx]

Fixed the grounds to motor still no start. My scanner was working fine and now it keeps saying unable to locate vcm and the mpvi controller blinks busy.

[flame]

More times than I can count people with swapped cars don't power the coils/injectors while the key is in the crank position. You need power to them key on and key cranking. Check that first.

[LS1 240sx]

More times than I can count people with swapped cars don't power the coils/injectors while the key is in the crank position. You need power to them key on and key cranking. Check that first.

Did that already, no spark.

[Google]

You need to check your powers and grounds.. wiring to the cam and crank sensors, coils, and injectors..


Sounds like a wiring issue..

+1 and would like to add.... The pcm is missing a ground or power..



..

[LS1 240sx]

Is that causing no spark? if so plz tell me which power and ground pin I should follow. 2004 GTO PCM. Really appriciate the help guys.

[copley87blazer]

http://www.chevythunder.com/2004_gto_pcm_pinouts.htm hope this helps