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Project Ruby in the Rough

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Old Jul 26, 2014 | 02:50 PM
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Default Project Ruby in the Rough

I just bought a 93 Ruby Red, and had it towed home. Bought the car for $2000, it's a six speed car with 155,000 miles on it. The previous owner was ChopperClay, he gave up on it. It has no spark, so I'm going to start from the 1st step, and test every component.
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Old Jul 26, 2014 | 05:48 PM
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No voltage to the coil, all fuses are good
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Old Jul 27, 2014 | 09:20 AM
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in the old days, I would check the wires and connection @ the starter..the small wire hooked with the battery cable.. that's where the hot was. Don't know about the new computer cars. (coil wise) but am learning quickly.
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Old Jul 27, 2014 | 10:35 AM
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after pulling all the fuses, and reseating all the connectors, the car started on 1st try, and ran perfect. looks like maybe the coil harness doesn't fit the connector securely
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Old Jul 27, 2014 | 12:08 PM
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Originally Posted by Geardo
after pulling all the fuses, and reseating all the connectors, the car started on 1st try, and ran perfect. looks like maybe the coil harness doesn't fit the connector securely
thanks for the update. Keep us posted on your journey with this ruby..some of us like to follow the the project.
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Old Jul 27, 2014 | 12:21 PM
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Now the car is back to no start
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Old Jul 27, 2014 | 12:48 PM
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Not to degrade to throwing parts at it, but given the mileage, would replacing the existing ignition system as a whole be an option for you? Any pictures?
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Old Jul 27, 2014 | 01:00 PM
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Originally Posted by 1985 Corvette
Not to degrade to throwing parts at it, but given the mileage, would replacing the existing ignition system as a whole be an option for you? Any pictures?
The previous owner replaced the Opti, coil, and ICM. The no voltage to the coil, makes me think PCM, Auzone has a Cardone reman for $160
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Old Jul 27, 2014 | 09:30 PM
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I think I saw one listed here from "parts for sale". Wanted maybe 1/3 that price with free shipping.
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Old Jul 27, 2014 | 10:41 PM
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Is there an aftermarket tach installed? If so, make sure the wire isn't grounding out on anything. . . although that should pop the fuse.

Check the coil with a multimeter.

Pull all the connectors off. Put the + on the wire that goes to the opti and put negative on the four different connectors on the coil. Should be ~8500 ohms.

Any auto store can check the ICM.

Oh, another thing to check is the ignition relay. You can try to jump it, may be the relay is sticking?
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Old Jul 27, 2014 | 11:31 PM
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I wonder which wire you jiggled made it work for a while.

Anytime I see unplugging and re-plugging temporarily fix a problem I look to the wires themselves.
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Old Jul 28, 2014 | 08:44 AM
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I ordered a Opti harness, the one on the car looked really nasty, and a new ICM.
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Old Jul 28, 2014 | 12:44 PM
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the coil harness is prone to wearing out and failing... replace same.
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Old Jul 28, 2014 | 06:50 PM
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Originally Posted by bogus
the coil harness is prone to wearing out and failing... replace same.
Looks like you buy the connectors, and splice them in?
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Old Jul 28, 2014 | 10:06 PM
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Originally Posted by Geardo
Looks like you buy the connectors, and splice them in?
Yup, solder them in, don't just splice.
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Old Jul 29, 2014 | 09:12 AM
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Im not sure, but, the clutch safety switch if bad, or going bad, will prevent the car from starting....might be something to look at, test or change out...
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Old Jul 29, 2014 | 02:46 PM
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Originally Posted by 81c3
Im not sure, but, the clutch safety switch if bad, or going bad, will prevent the car from starting....might be something to look at, test or change out...
Wouldn't the clutch safety switch prevent it from cranking? I don't have a problem cranking the engine, just a no spark problem.
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Old Jul 29, 2014 | 09:23 PM
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Originally Posted by Geardo
Wouldn't the clutch safety switch prevent it from cranking? I don't have a problem cranking the engine, just a no spark problem.
Yes, I would say youre correct.
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Old Aug 2, 2014 | 05:59 PM
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Replaced the ICM, still no start, replaced the coil with a MSD, and replaced the Opti harness, now it starts, idles a little high, but ran it till it was 200 degrees shut down, and restarted several times. I did notice the ASR light, and security light flashed a few times.
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Old Aug 2, 2014 | 08:39 PM
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I never had an issue with my ruby & I'm not thinking it is this but, my 87 had a start/no start issue and it was the resistor on the key itself was worn. I'm guessing that it wouldn't even crank if that was the case but you did say the security light was coming on. Like I said it's probably not it, just wanted to throw that out there. Good luck and keep us posted! I love those rubys.
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