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I have a quick question, I finally rebuilt my engine after it jumped timing and broke everything.

I tried to start it last night and while I was cranking the engine, my Engine Light was staying on. It didn't start, I think due to the fact my battery is too weak since it's been sitting on concrete for last 3 months so I'm going to go get a new on here in a few.

my question is, should the Engine Light be staying on while cranking until it turns on or does it go out as soon as you start cranking it. I just can't remember really
 

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Yes light stays on until engine starts and ECM has checked all sensor readings.
 

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Yes, the computer checks every sensor and actuator (except 02 sensors), once verified within programmed voltage reading, CEL will dissapear within 5 seconds after initial firing of engine.
 
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