LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Car Died, Dont know what to Do !

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Old Feb 7, 2003 | 06:48 PM
  #1  
AENIMA95z28's Avatar
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Car Died, Dont know what to Do !

Started my car yesterday and it ran for about 10 seconds then completely shutoff. Took the key out and tried to restart it but starter motor would not even turn over (nothing worked, completely dead). None of the dummy lights operate nor my cdplayer (no power). I am positive its not my battery ( its brand new and other power sources work!) and my running lights and radar detector both operate. The back lights on the dash will operate only if the head lights are on although the dummy lights still will not. I think either my PCM/ECM is fried or there is some kind of disruption or break in my power supply running to the starter and the Dummy lights. I believe the Head lights and Cig lighter have a dircet but alternate route to the battery than the dummy and starter. PLEASE HELP ME FIGURE OUT WHATS GOING ON, IM SERIOUSLY SCREWED IF WE CANT

Few Questions
(1) How do you know if you have a fried ECM/PCM? (2) How much is a new one ? (3) is the total install hard and how would you do it if needed?
Old Feb 7, 2003 | 06:50 PM
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Also How would I test to see if my PCM is Fried ? Anyone know of a good way to test voltage before and after the PCM ?
Old Feb 7, 2003 | 07:28 PM
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I can tell you it's not your PCM. If the engine turned over and not started, you could blame it on the PCM, but your problem is somewhere else...
Old Feb 7, 2003 | 07:36 PM
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I really dont want it to be the PCM. I think i was unclear when i mentioned what happend above. When i got in my car, i started it as i normaly would, It fired up perfectly, no weird sounds, it was perfect. About 10 seconds later it just died, then i took the key out of the ignition and put it back in and tried to restart and that is when nothing happend, the starter solenoid didnt even click, complete silence.
Old Feb 7, 2003 | 07:47 PM
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Normally, the engine will turn over but not start even without a pcm.
Old Feb 7, 2003 | 08:32 PM
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really, thats good news for me then i suppose. I think its the main electrical line running from the ignition. That or my ignition switch is fried.
Old Feb 9, 2003 | 08:08 PM
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From: Windsor, Canada: Home of the FASTEST LT1 & LS1 6 spds :)
stupid question but i have to ask..... are the conections to your battery tight? i know i am reaching here but figured it couldn;t hurt to ask.
Old Feb 9, 2003 | 08:10 PM
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very tight, battery fully charged too!
Old Feb 9, 2003 | 08:25 PM
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Load

Without putting a load on the battery, it's impossible to figure out if it's any good. Small accessories, such as lights, will work fine with a sub-standard battery. Being new means nothing. Your problem does sound like the ignition switch underneath the dash, though. It's connected to the steering column. I don't know any way to test the unit other than replacement, so you might try cheaper solutions first. Good luck.
Old Feb 9, 2003 | 08:38 PM
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security

Oh, I forgot to ask if your security light is on. If it is, check out this thread: http://web.camaross.com/forums/showt...t=key+resistor
Old Feb 9, 2003 | 08:46 PM
  #11  
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Nope, no security light, i was hoping it was but no luck.
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