LS1TECH - Camaro and Firebird Forum Discussion

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-   Generation III Internal Engine (https://ls1tech.com/forums/generation-iii-internal-engine-5/)
-   -   408 won't start (https://ls1tech.com/forums/generation-iii-internal-engine/1487518-408-wont-start.html)

02CETA1850 Nov 17, 2011 04:37 PM

408 won't start
 
I recently installed a gen4 408 into my 2002 ws6, I am using the ls1 wiring harness still. I have the correct 24tooth reluctor wheel, but i keep getting a crank position sensor error when I try to start it, I swapped the sensors twice to double check and make sure it wasn't a bad sensor. The tach works for a split second while trying to start it, then does not work again until i clear the crank position sensor code p0335. Can't get it to start, any ideas?

408
11.5cr
ls3 heads
ls7s cam (tsp)
mail order tune from tsp

09camaro383 Nov 17, 2011 06:46 PM

what type of cam sensor setup do you have? ls2?

02CETA1850 Nov 17, 2011 07:00 PM

cam sensor is set up correctly as far as i know, x1 wheel and the wire has been crossed over for the sensor

09camaro383 Nov 17, 2011 08:54 PM

2 Attachment(s)
do you have this for timing

02CETA1850 Nov 17, 2011 09:53 PM

yea thats what have, with the outside two wires swapped on the connector

5.3LJimmy Nov 18, 2011 10:09 AM

https://ls1tech.com/forums/generatio...ont-start.html

I found that in a quick search and figured it was worth a shot. I would focus on the crank sensor because the car will start without the cam sensor. It may pop and backfire while cranking but it will run.

02CETA1850 Nov 18, 2011 10:28 AM

I had tried something similar to that last night with no luck. Maybe I spaced out the sensor too far?


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