LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Trouble starting

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Old 01-28-2014, 06:51 PM
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Default Trouble starting

Okay here has what happened:
-Bought 1994 Z28
-Put $20.00 of premium gas from Marathon
-2 days later car doesn't start, just cranks and cranks
-2 days after that car clicks, no cranking
-Have battery and alternator checked = all good
-Find out starter is bad, replace starter
-Now it cranks and cranks like before
-I recall SES light turned on right before car started to just crank and crank
-Try to check SES light with an OBD1 scanner and the light doesn't flash
-I have checked fuel pressure and it checks out good

Here is a video of what it currently sounds like currently:


I need your help! Any thoughts or ideas?
Old 01-28-2014, 09:58 PM
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http://www.mainstreamtopics.com/foru...rt-diagnostic/

Can we please sticky this link?
Old 01-30-2014, 01:43 PM
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If it's got fuel pressure, I'd get the ICM tested first, then the coil, then look into opti replacement, they do fail with no codes sometimes. Hopefully, it's not the opti, good luck!
Old 01-31-2014, 07:56 AM
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Originally Posted by ahritchie
If it's got fuel pressure, I'd get the ICM tested first, then the coil, then look into opti replacement, they do fail with no codes sometimes. Hopefully, it's not the opti, good luck!

I am hoping it isn't the opti also lol. I'll check those out, I appreciate it!
Old 01-31-2014, 01:48 PM
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Try starting it while holding the gas pedal to the floor
Old 01-31-2014, 10:29 PM
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And everyone ignores the link I posted you that walks you through how to diagnose a no start condition for an LT1 and will tell you if the Opti has gone bad. Awesome.
Old 01-31-2014, 11:16 PM
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Good diagnostics. First, have the codes checked. Most parts stores scanners or the simple plug in ones do not work. The next thing is to couple what you learn from the code stored with Fox Slaughter ' link
Old 02-03-2014, 05:29 AM
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Originally Posted by F0x Slaughter
And everyone ignores the link I posted you that walks you through how to diagnose a no start condition for an LT1 and will tell you if the Opti has gone bad. Awesome.
I appreciate your link- was a big help. I am having a friend help me out this week with getting it to fire. So hopefully good news to come.
Old 02-03-2014, 05:30 AM
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Originally Posted by Quazz
Good diagnostics. First, have the codes checked. Most parts stores scanners or the simple plug in ones do not work. The next thing is to couple what you learn from the code stored with Fox Slaughter ' link
Thanks for the tip- ill let you guys know how it goes this week. Hopefully we get her to fire up!
Old 02-03-2014, 08:05 AM
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Did you try starting it while holding the gas to the floor yet?
Old 02-03-2014, 01:15 PM
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Originally Posted by KyleW707
Did you try starting it while holding the gas to the floor yet?
I did and got nothing, the Z is on its way to a buddies shop as we speak.
Old 02-03-2014, 04:17 PM
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Okay. Just for future reference, if they temp sensor in the waterpump goes bad, which is a common problem, that is a simple way to test it. Mine was bad, and would crank and crank and crank and not start until I held the gas to the floor



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