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Ls3 stroker starts but does not stay running

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Old 02-12-2011, 07:42 PM
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Default Ls3 stroker starts but does not stay running

Ls3 427,have a po 343 code,no tach.the auto meter tach works ok.sometimes it will pop thru the exhaust.anybody,please help.
Old 02-12-2011, 08:25 PM
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Did you use a cam position sensor extension? If so my money is on the pins needing to be reversed.
Old 02-12-2011, 08:38 PM
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No I extended the harness,I also checked the the pink wire and the red with a test light,and checked good.
Old 02-14-2011, 10:58 AM
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VAT disabled?
Old 02-14-2011, 01:07 PM
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yes,when it cuts out,still have fuel pressure.
Old 02-14-2011, 01:13 PM
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i fixed the cam sensor code,now whe adjusted the idle screw way up it stayed running while we lowered the idle,and it idle ok.running way lean.but as soon as you touch the gas,it quits.
Old 02-16-2011, 03:16 PM
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bump.
Old 01-18-2012, 09:15 PM
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VATS symptoms are: starts but doesnt run?
Old 01-18-2012, 09:16 PM
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Default LS1 w/ truck harness and ECU

I installed an LS1 w/ truck harness and ECU in my wife's Porsche.
It starts but does not stay on.
Would that be the VATS?




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