LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

240sx/LS4 swap

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Old Jun 20, 2015 | 02:26 PM
  #21  
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Originally Posted by 91parkave
Op please keep on with your build. Illborns opinion does not reflect the ls4 community.
What?
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Old Jun 20, 2015 | 03:00 PM
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Post was removed.
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Old Jun 20, 2015 | 04:30 PM
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Originally Posted by Ill_Born_ss
I am kinda surprised that over 700 veiwers and no one caught the major flaw in this project.... even the so called experienced have not mentioned it.
He deleted his post but I restored it. This was his post
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Old Jun 28, 2015 | 03:37 PM
  #24  
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Default Run into a problem

Hooked up as many wiring connections as I can. I can get her to crank but I have no spark. I have 2 connectors that I do not know what they go to, I think one is for ABS and the other I have no clue. Please help me try and find the parts I need. I have about 3 weeks before the drag races and am so close to getting it finished? I just need someone with an LS4 to possibly send some pics of the computers I am missing. Thanks all for the support in my build. Hope yours are going well.
I will put up pics on of the 2 connectors I need help with.
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Old Jun 28, 2015 | 03:40 PM
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This is right above the tranny and I believe it's to the abs





This one I have no clue and it has an airbag connector a few inches from it.
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Old Jun 28, 2015 | 04:00 PM
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Originally Posted by Nreid90









This one I have no clue and it has an airbag connector a few inches from it.
did you have the apporiate codes deleted for stand alone? Without the bcm it will not get fuel while cranking
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Old Jun 28, 2015 | 04:17 PM
  #27  
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No I have not and from what I've seen the bcm and Tcm are both hooked up here are pictures of what I'm talking about



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Old Jun 28, 2015 | 04:41 PM
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Originally Posted by Nreid90
No I have not and from what I've seen the bcm and Tcm are both hooked up here are pictures of what I'm talking about



That's the Ecu and tcu but you need someone with hp tuners to delete the security codes etc..
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Old Jun 28, 2015 | 04:42 PM
  #29  
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Why do I need them deleted. I still have the original key and ign switch so I thought I could use that and it would work.
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Old Jun 28, 2015 | 07:07 PM
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If you scan the computer now you'll have a set of codes that you'll need to disable. After that you'll be able to start
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Old Jun 29, 2015 | 11:48 AM
  #31  
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Currently when I turn the key I have no power to anything. The battery has 12v and I can jump the starter and it cranks but that's all I have. Tonight I'm going to trace power to see where it stops. Does anyone have the wiring diagrams for the ls4?
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Old Jun 29, 2015 | 01:32 PM
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Stupid question, but isn't the engine/transaxle turned the wrong way? The way it looks to me, you're going to have one forward gear (reverse) and four reverse gears.

Please tell me I'm forgetting something.
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Old Jun 29, 2015 | 01:34 PM
  #33  
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Ha no it's facing the correct direction
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Old Jun 29, 2015 | 01:47 PM
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Originally Posted by Nreid90
Ha no it's facing the correct direction
I figured I was on crack.
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Old Aug 3, 2015 | 10:46 PM
  #35  
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Default It runs

So new issue. Got this turd running for a car show. Lots of interest in the build but... It's only running on 4 cylinders. Does anyone know a way to bypass the dod. My dlc connector is no longer reading codes so I'm throwing the turner out of the picture. I have seen threads of doing a dod delete kit but no pictures. Is there a was to make the ecu think that all the sensors are working and give me back the v8 I want?
Thanks gents
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Old Aug 4, 2015 | 06:23 AM
  #36  
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Clarify how you got it running and what you mean by turner out the window. If you want it to default to v8 just pull the opsu sensor connection off
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Old Aug 4, 2015 | 08:01 PM
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I had a connection undone and that's y it would not fire. I still could not get it to crank with the key so I wired in a push button starter. My dlc is no longer reading and I don't know the cause of that, reason why I said that a tuner is out the window. I tried unplugging the oil pressure switch and the dod connector next to that but still only running on 4 cylinders.
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Old Oct 15, 2015 | 02:11 PM
  #38  
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Default Done an hauls a$$

It's done and is for sale 5000obo. Runs 8.5's in the 1/8.
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Old Oct 15, 2015 | 02:12 PM
  #39  
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Old Oct 16, 2015 | 10:22 AM
  #40  
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u did it man,congrats
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