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Old 08-17-2006, 08:33 PM
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93 Lt1

I've got a 93 camaro LT1 83000 miles and it dosen't have any spark.I cleaned under the hood very careful not to get water on the electical, started it up right after ran for 20 mins then started it back up an hour later drove it home. 6 hours later tried to start it no fire. It kinda sounds different when I turn it over.I put a new opti in last year (1000 miles ago) plugs wires , I put a new coil and ign module in it only code I get is 16 on the scanner checked all the connections and they look good. And the timing chain isn't broke looked in the oil cap. Still no spark is my computer junk any one else run into this. And for the last 2 weeks it's been runnig kinda wierd, idling rough missing sometimes when I'm on it hard.Any HELP would be great.

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Old 08-17-2006, 09:45 PM
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Check for power at coil with the key on,pink wire I think.Check for fire coming out of the coil not just the wires. If so you have a problem in the distributor under the h2o pump.Check all your fuses with a test light. Without proper test equipment its going to be tough to determine whether or not its the opti unit or the ignition module.Also could be a wiring issue. You need to do pin point tests for this problem but there are some things you can do. Before I removed the opti spark unit, I would have the ignition module tested or replace it. Its mounted to the ignition coil bracket.Also a bad coil is a possibility. I hope some of this helps good luck.
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Old 08-17-2006, 11:21 PM
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Code 16 is low voltage in the low resolution circuit from the distributor (optical sensor low res. side).

You can check for reference voltage (5 volts) at terminal "A" (red wire with black stripe) going to the distributor with ignition 'ON' (run position), and see what you have........

Or, you can blow out the distributor cap with some compressed air (I know it's a pain). I'll bet you inadvertently got water in there between the sensor and the plate.
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Old 08-18-2006, 06:29 AM
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Check your coil wire too.

I had replaced the wires on my LT1 and one year later it started acting funny, and somehow the terminal on the coil was corroded again!

It's easy to get to and worth a look.

GOod luck.
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Old 08-18-2006, 07:04 AM
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I'll try and blow it out (opti), checed for spark out of coil and there isn't any. Module is bran new and so is the coil.
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Old 08-18-2006, 07:14 AM
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Quote:
Originally Posted by L88427BigBlock
I'll try and blow it out (opti), checked for spark out of coil and there isn't any. Module is bran new and so is the coil.
Just because they are new, doesn't mean that they are good.


Steve
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Old 08-18-2006, 11:10 AM
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Yea I know that, kinda weird that the old ones and new ones are bad at the same time.I just don't want to go through the trouble of pulling my water pump to see what the cap and rotor look like.
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Old 08-24-2006, 09:07 PM
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Pulled the cap off and all the ends are corroded, going to clean them up and see if she'll fire this weekend.
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Old 08-24-2006, 09:25 PM
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Pay close attention to the plate for rust/debris or water.
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