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Car wont start!

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Old Aug 8, 2004 | 05:01 PM
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Default Car wont start! 1995 LT1

I let the car sit up for a while, and now it will not start. I am getting proper fuel pressure and I changed the coil hoping to fix the problem. The car just cranks, but sometimes it will cough and sputter after cranking. What do I need to check first? The car was running fine when parked. Thanks.

Last edited by SLOWBUSA; Aug 8, 2004 at 05:18 PM.
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Old Aug 8, 2004 | 05:11 PM
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A '95 huh? Well, I had ideas for an '85, but I'm not sure on yours. If ya don't get any bites here, try C4 Tech/Performance.
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Old Aug 8, 2004 | 05:17 PM
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Don't know if I can help, but how long was it sitting?
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Old Aug 8, 2004 | 05:19 PM
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About two months the first time. I then took awhile to get new battery, put in high amp altenator, and changed coil. So it has probably been 4 months total.

Last edited by SLOWBUSA; Aug 8, 2004 at 05:36 PM.
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Old Aug 8, 2004 | 05:21 PM
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that's why! the car's pissed at you for letting it sit so long!
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Old Aug 8, 2004 | 05:23 PM
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I thought the problem was a low battery or coil, so I have changed both. Still doesn't start. Could this be Optispark or relay or what.
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Old Aug 8, 2004 | 05:23 PM
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I konw you said you changed your coil, but have you checked to see if you are getting spark to your plugs?
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Old Aug 8, 2004 | 05:25 PM
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Yeah. Iagree. I can't believe it sat that long.
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Old Aug 8, 2004 | 05:29 PM
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No I have not checked. What do I need to do this? I did check voltage going to Ignition module and could not get over .5 volts. Manual says it should be at least 10. Is this correct? Where would the problem be if the module is not getting enough voltage and why would this go out because of the car just sitting?
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Old Aug 8, 2004 | 05:39 PM
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I'm not familiar with the optispark; so hopefully someone else will be able to answer your questions about the voltage and the module. But one way to check to see if you are least getting electricity to the plugs is to use a timing light. If the light works, it means you are.

Another thing that comes to mind is bad fuel; but I would doubt that unless somehow water or other impurities got in there while it was sitting.

Again, not being real familiar with the '95's and optisparks, hopefully someone else will chime in and provide some help.
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Old Aug 9, 2004 | 03:08 AM
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Originally Posted by PsychoNumber1
that's why! the car's pissed at you for letting it sit so long!
If you are working on mods and let the car sit for awhile, will it be pissed at you?
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Old Aug 9, 2004 | 09:37 AM
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If it ran when you parked it and does not run now, it's probably a bad or corroded connector somewhere. They are all over you engine. I'd carefully remove each one (except alternator - that won't affect starting), spray some "tuner cleaner" from Radio Shack and replace, one at a time. Can't hurt and you may find the culprit.
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Old Aug 9, 2004 | 12:11 PM
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Originally Posted by SLOWBUSA
I let the car sit up for a while, and now it will not start. I am getting proper fuel pressure and I changed the coil hoping to fix the problem. The car just cranks, but sometimes it will cough and sputter after cranking. What do I need to check first? The car was running fine when parked. Thanks.

1st the battery has to be all the way up.
2nd pull a plug to see if its wet or dry.
You should start a car once a week.
Make sure there is gas in the tank.
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Old Aug 9, 2004 | 12:37 PM
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I had a similar no start problem, it would crank, but it seemed to be no spark or no fuel. Turned out the coil wire was rubbing against the water pump. Check to make sure you don't have any ignition wires touching anything they aren't supposed to be.
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Old Aug 10, 2004 | 12:26 AM
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OK check this out. I go to the car this morning before leaving for work and it fires right up. Sounds like it is running great. I have to leave for work. I come home and go to start it up and it just cranks and coughs or sputtersafter I release the key. When I put the key in the ignition, the door cimes do not go sound off like they are supposed to do. When I turn the key to the first position, the dash warning lights do not light up. I know the ignition switch is having problems. The ignition key has a chip on it. I take it the computer reads this chip to allow the ignition to work??? If the ignition is not reading the chip properly will it disable the ignition??? If so, what do I need to check or replace to fix the problem?? Thanks for all the suggestions. I really want to get this fixed soon as I have many upgrades waiting to be installed(4QA1 shocks, RD crossframe, adjustable strut rods).
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Old Aug 10, 2004 | 08:07 AM
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Default Won't start

Just a guess but could it be gas that has an increditable amount of condensation/water in it? I thinking after four months, a large amount of condensation would collect.
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Old Aug 10, 2004 | 11:20 AM
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Try the spare key or get GM to make another one.
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Old Aug 11, 2004 | 12:01 AM
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I quess it could be the gas. I have tried both keys. It did not start this morning. How do you service the part of the ignition switch that controls the door chime? I would like to get this to work.
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Old Aug 11, 2004 | 05:08 AM
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"VATS" disables the starter relay so if the "VATS" was the problem, the starter wouldn't even engage.
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Old Aug 11, 2004 | 11:49 AM
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Try cleaning your battery cables, remove them and wire brush both sides.
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