Conversions & Swaps LSX Engines in Non-LSX Vehicles
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5.3 no start

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Old Dec 2, 2017 | 03:45 PM
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Default 5.3 no start

OK I just installed a5. 3 I fired it up ran it a few seconds and shut it off now it will not start I have injector pulse good fuel pressure and spark ham a cam code 0342 low circuit I got 12v going to it and 2.5 pulsating got them reading on 2 cam sensors even at the computer same readings has a good ground to. Any ideas I thought either clogged injectors or timing off. Just looking for opinions
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Old Dec 3, 2017 | 10:42 AM
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Is the VATS turned off?
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Old Dec 3, 2017 | 12:49 PM
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Originally Posted by ls1nova71
Is the VATS turned off?
exactly I had this same problem a few days ago. Had it turned off and it fires though I know I have issues other then VATS
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Old Dec 4, 2017 | 07:01 AM
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The vats system should have been eliminated. I did send the computer off to get reprogrammed
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Old Dec 4, 2017 | 08:28 AM
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well camshaft position sensor does assist with starting... unplug it , try to fire engine, possible bad sensor or wiring issue to that harness
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Old Dec 4, 2017 | 01:05 PM
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Camshaft position sensor is good. I looked down in the motor and the reluctant wheel doesn't look good. Guess I'm gonna have to pull the motor. And thanks for the help
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