LT1/LT4 Tech 1993-1997

car cranks but wont start

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Old Dec 29, 2017 | 03:01 PM
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Default car cranks but wont start

I own a 1997 Camaro z28. this has plenty of miles on it. so here's the story. I was driving one day doing 60 put it in neutral to coast down to the next speed zone. car died. I tried restarting it while going and then pulled over and attempted again. had it taken back to my house.
I checked for fuel pressure and I have 41 psi at the Schrader valve. tried to start it with starting fluid and just opening the throttle body and spraying it while cranking. still didn't start. checked for spark and I had none. thinking this and knowing the opti is a piece of crap I opted to change it. still wouldn't start so I had an ignition coil on hand. changed that, still no start. so that brings me to changing the entire ignition system from the distributor, ignition coil, ignition control module, and even the crank position sensor. still wont start. I am going mad trying to figure out how I'm not getting spark any help would be appreciated. thank you.
 
Old Dec 29, 2017 | 03:29 PM
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Is your security light on by any chance?
 
Old Dec 29, 2017 | 04:45 PM
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check for power to the pink wire at the coil. i am sorta thinking its the icm, igntion control/coil module.
 
Old Dec 29, 2017 | 04:48 PM
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have you looked at this https://camaroforums.com/forum/lt1-l...37/#post579761 can also download the manual in the manual section at the bottom of the home page.
 
Old Dec 29, 2017 | 09:45 PM
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my security light has been on for years. I've never had a problem with it. I've had problems with pass lock on another car before but the light blinks rather than stays on. I've also changed icm and the ignition coil. I changed the icm today and it still didn't start. the only thing I haven't changed is the pcm. i'll get out in the morning and try to check the power to the coil out. how could I see if the security light is causing this?
 
Old Dec 30, 2017 | 05:25 AM
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vats should not kill a engine while its running. not saying for sure thats not what it is.
 
Old Dec 30, 2017 | 09:49 AM
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I'm gonna try to have the car relearn the key. i haven't tried that yet.
 
Old Dec 30, 2017 | 11:06 AM
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I seem to remember when I was having opti troubles reading a similar story somewhere and it turned out to be the damn plug on the wiring harness.
https://www.summitracing.com/parts/c...7/applications
Not the problem I had but could be yours, sometimes it's the little things you don't expect. Good luck, these things can be frustration especially when you throw money at them and nothing woks.
 
Old Dec 30, 2017 | 05:53 PM
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i'll try replacing the plug. i tried to get my security light to go away and it wont. i put the key in for ten minutes and the light stays lit. i don't think this is my problem, i looked into it and if it's the security light it cuts fuel not spark.
 
Old Dec 30, 2017 | 09:56 PM
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power at the pink wire? i had a ignition switch go and it died goin down the road, managed to get home holding the key a certain way. once i got home and shut her off it wouldnt start. try testing the opti harness. runs from up by the intake to the opti.
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