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Car cranks, then kills????

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Old 03-30-2005, 08:57 PM
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Default Car cranks, then kills????

My car cranks up but kills in about 5 seconds, the injectors are pulsing, the vats is turned off. The ground to the block from the battery to the block is hooked up, also the strap to the left side of the block to the frame rail hooked up. The TPS is registering correct. The fuel pressure is reading 54-56 p.s.i. @ start is not dropping when it's cranked. If you try to give it gas it kills instantaniously. I had two grounds that hooked up to the back of the head when we reinstalled the engine, but I thought it was odd that the third one was not there like normal. The car is a 98. We double checked all the sensors and they're all plugged in. The car has been tuned. This is just baffling me. This is not my first LS1 to work on or drop, so I can promise you it's driving me insane. I know it's something stupid and minor, but damn it's about to make me go coo coo. Any suggestions would be greatly appreciated!!!!!!
Old 03-30-2005, 09:50 PM
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Do you know what it is loosing to make it stall, spark, fuel or injector pulse? Or spark & pulse lost?
Old 03-30-2005, 10:40 PM
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Originally Posted by wrencher
Do you know what it is loosing to make it stall, spark, fuel or injector pulse? Or spark & pulse lost?
It doesn't lose pulse until the car kills.
Old 03-31-2005, 12:01 AM
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It could be your crank sensor.
Old 03-31-2005, 12:05 AM
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The GM techII showed all was good.




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