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408 won't start

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Old Nov 17, 2011 | 04:37 PM
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02CETA1850's Avatar
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Default 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

Last edited by 02CETA1850; Nov 17, 2011 at 05:43 PM.
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Old Nov 17, 2011 | 06:46 PM
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what type of cam sensor setup do you have? ls2?

Last edited by 09camaro383; Nov 17, 2011 at 08:49 PM.
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Old Nov 17, 2011 | 07:00 PM
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cam sensor is set up correctly as far as i know, x1 wheel and the wire has been crossed over for the sensor
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Old Nov 17, 2011 | 08:54 PM
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do you have this for timing
Attached Thumbnails 408 won't start-small.jpg   408 won't start-imagesca43b1fd.jpg  
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Old Nov 17, 2011 | 09:53 PM
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yea thats what have, with the outside two wires swapped on the connector
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Old Nov 18, 2011 | 10:09 AM
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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.
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Old Nov 18, 2011 | 10:28 AM
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I had tried something similar to that last night with no luck. Maybe I spaced out the sensor too far?
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