C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Tried to pull codes

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Old Jan 9, 2006 | 10:00 PM
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Default Tried to pull codes

Tried to pull codes but the blinking light is gone or I did not see it,Is it located right where you use the jumper wire? Also when i jumped the terminals the fan came on is this correct?Thanks Ok I found it its the check engine light,looked in the manual figure that,still don't know about the fan.

Last edited by MR NICE; Jan 9, 2006 at 10:06 PM.
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Old Jan 9, 2006 | 10:13 PM
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Fan will come on during diagnostic mode. What year
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Old Jan 9, 2006 | 10:41 PM
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Its a 1985
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Old Jan 9, 2006 | 11:00 PM
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Here's some info if you don't have the factory manual
http://members.shaw.ca/corvette86/No...it%20Check.pdf
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Old Jan 9, 2006 | 11:01 PM
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It's the "blinking light" you should be watching. What we're talking about is the light that says Service Engine Soon (SES).

After you jump the A&B terminals on the ALDL and turn the ignition key to "ON" (do not start the engine) the SES will first blink code 12 - it will blink once, then there will be a short pause, then you'll see two quick blinks. Once, then twice; that is code twelve. It will blink code 12 a total of 3 times.

After that any stored error code will blink. Say the code is 34. The SES will blink three quick times, then a pause then four quick times, then a longer pause. This will repeat a total of 3 times.

Now the system will automatically go to the next stored error code if there is any. The same process will recur for this, and any other stored error codes.

Once all the codes have been displayed, the system will again blink code 12. Code 12 just tells you that the error code retrevial system is working, it doesn't mean there's an error associated with it.

Hope this helps,

Jakee

Last edited by JAKE; Jan 10, 2006 at 10:35 AM.
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Old Jan 10, 2006 | 07:16 AM
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Thank to all for the help
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Old Jan 10, 2006 | 02:42 PM
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Well I tried but the check engine light never came on,the car has an after market radio maybe they messed with the wires or its burnt out ,what do you guys think?is there another tool to pull codes?what about Auto zone could they pull the codes? Thanks
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Old Jan 10, 2006 | 02:47 PM
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Originally Posted by MR NICE
Well I tried but the check engine light never came on,the car has an after market radio maybe they messed with the wires or its burnt out ,what do you guys think?is there another tool to pull codes?what about Auto zone could they pull the codes? Thanks
Is the Check Engine light even working? Does it come on when you insert the ignition key and turn it to the "On" position?

Some of the diagnostic programs, like Diacom will show any stored codes, at least on the 86 it will.

One of the larger auto parts stores, like AutoZone, advertise they can pull codes. Might want to give them a try.

Jake
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Old Jan 10, 2006 | 02:53 PM
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Jake, Thanks for the help I'll have to check when I turn on the key but I don't recall seeing it,if its just a bulb is it an easy fix?could someone have unhooked it ??
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Old Jan 10, 2006 | 03:09 PM
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Originally Posted by MR NICE
Jake, Thanks for the help I'll have to check when I turn on the key but I don't recall seeing it,if its just a bulb is it an easy fix?could someone have unhooked it ??
http://members.shaw.ca/corvette86/No...0-%20Light.pdf
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