LS1TECH - Camaro and Firebird Forum Discussion

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-   Generation III External Engine (https://ls1tech.com/forums/generation-iii-external-engine-6/)
-   -   New motor, new everything...won't start. (https://ls1tech.com/forums/generation-iii-external-engine/1730413-new-motor-new-everything-wont-start.html)

BoostinIx Jun 8, 2014 05:21 PM

New motor, new everything...won't start.
 
6/16: Problems- Fixed. Found an injector hot, getting too much voltage. Redid PCM connection, works. Gonna replace PCM for peace of mind.



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6/14: Added some grounds. Checked connectors. Same issue. P0200, can't idle on own without throttle input.



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6/9: Update- Changed crank sensor, codes are gone but still no go. Checking tune tomorrow. The hunt continues.

6/10: Updaaaaaaaaaaaate. Tune is good, VATS was disabled. Some pins got bent on installing the PCM. Those are fine now. It stays running so long as I give it gas. Let off, it dies. Threw P0200. All injectors were brand new. The hunt continues....but it ran for more than a second. I excite.

Video:

Issue:
http://scontent-b.cdninstagram.com/h...15131246_n.jpg

Details:

https://scontent-a-lga.xx.fbcdn.net/...94219490_n.jpg

LS3 block/heads/intake.
LS1 crank with 24x reluctor, ls1 crank and cam sensors. 3 bolt 1x cam, Bosch green giants. Everything is new. All sensors, coils, harness, the whole shebang. 0411 PCM with a base tune loaded up onto it.

I'm way out of my element on this whole setup lol. Can't really get to the crank sensor to multimeter it there, but I can mm the signal at the PCM if someone tells me what to measure. Another suggestion someone gave was a CASE relearn, but it doesn't run...so that's out.

Troubleshoot. Aaaaand go.

S10xGN Jun 8, 2014 08:45 PM

This f'in site takes forever to load, so rather than me sit here and wait an hour for all the ad trash to boot up, let me ask you this. What front cover are you using? The VVT cover puts the cam sensor too far away from the gear to read a good signal. Also, while the cam sensors (24x/58x) are the same for all front covers, but the wires sometimes need to be switched around in the connector shell.

BoostinIx Jun 8, 2014 08:51 PM

I'll ask the dumb question, wouldn't that throw a cam code?

In any case, I got 12627501 with 12591720.

Reset the ECU and tried again, got P0335 and P0336 this time.

springer_4 Jun 8, 2014 08:57 PM

I ran into the same problem, I have a 98 WS6 everything was new and went with an LS7 cam. Didn't change the timing cover, started but didn't run. Just wondering if you have ls1 timing cover or ls2 timing cover?

BoostinIx Jun 8, 2014 09:07 PM

LS2 cover, IIRC the sensor was compatible with LS1? 12627501 with 12591720. Also used 109081 from Casper

But again, I'd think that'd throw a cam code no?

BoostinIx Jun 9, 2014 08:19 PM

Changed crank sensor, codes are gone but still no go. Checking tune tomorrow. The hunt continues.

niscur29 Jun 10, 2014 06:49 AM

Have you checked to verify everything is getting +12v etc/grounds. I saw in your build thread that u are using a WS harness have you checked from pcm to sensor that the wiring is correct? Verify you have fuel hearing the pump prime? I'm new to the ls shit too my 411pcm with trip the fuel pump relay for a split second to prime the rails then kills it until you turn it on. With the tach bouncing I would think the pcm is getting signal from the cam/crank correctly.

On my s13 I went with a standalone motor harness, PSI, and removed all the Nissan shit from the car that would control the motor/fuel. Could also be something wrong with whatever the WS harness is interfacing with on the chasis side?

BoostinIx Jun 10, 2014 03:49 PM

Updaaaaaaaaaaaate. Tune is good, VATS was disabled. Some pins got bent on installing the PCM. Those are fine now. It stays running so long as I give it gas. Let off, it dies. Threw P0200. All injectors were brand new. The hunt continues....but it ran for more than a second. I excite.

1970camaroRS Jun 11, 2014 12:53 AM

Check all of your connections with all of your injectors. Make sure none of the pins in the plugs for the injectors have backed-out.

BoostinIx Jun 14, 2014 03:17 PM

Checked and good. New harness and all but checked anyway.

Added some grounds. Checked connectors. Same issue. P0200, can't idle on own without throttle input.


BoostinIx Jun 16, 2014 07:42 PM

Problems- Fixed. Found an injector hot, getting too much voltage. Redid PCM connection, works. Gonna replace PCM for peace of mind.


pdlightning Jun 17, 2014 02:38 PM

Congrats! You just needed a bigger hammer! :D. Your experience and sharing allowed all of us to learn ! Thanks


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