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Ls1 Wont start, drove fine yesterday, today cranks but not firing

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Old 01-07-2011, 09:49 AM
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Default Ls1 Wont start, drove fine yesterday, today cranks but not firing

Hi, I went out to drive my car today and all it does is crank. I tested it and Im not getting any spark or pulses, so I changed the crankshaft position sensor hoping that will do the trick and nothing. I checked all my fuses and relays and they turn out fine. It drove fine yesterday and today I have this. Could it be that my Pcm took a dump? Please Help.
Old 01-07-2011, 12:01 PM
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no one, I am thinking that maybe its the ECM
Old 01-07-2011, 01:19 PM
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Yea I would think the PCM or the wires and connector to the crank senser. How about the VATs?
Old 01-07-2011, 01:30 PM
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VATS is tuned out. I checked all the grounds. Ill recheck the Crank sensor connector later
Old 01-08-2011, 07:44 AM
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Fuses???
Old 01-09-2011, 10:58 AM
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check the ing relay under the hood switch it with the ac this happend to a friend of mine and the dealer had a hard time finding it
Old 01-09-2011, 11:01 AM
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Ignition/starter relays. Check em. The fans take the same kind. Just swap them and see what happens. It's happened to me before
Old 01-09-2011, 03:11 PM
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do you have fuel pressure?
Old 04-06-2012, 05:52 PM
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I am having the same exact problem... My ignition relay keeps blowing and I'm not sure why. I narrowed it down to that at least. Also, are the AutoZone brand relays ****?

Should I use OMRONS?

Best,

Julian
Dallas, TX




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