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

trouble codes

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Old Oct 3, 2002 | 11:34 AM
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atotalnincompoop's Avatar
atotalnincompoop
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Default trouble codes

last night i tried to access the trouble codes under the dash on my "85, when i connected the 2 terminals no codes were flashed, not even the first one that always is displayed first to show that the system is working, the only thing that happened on one of my attempts was that the electric fan started up. anyone have any idea :cheers:
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Old Oct 3, 2002 | 03:15 PM
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From: Richardson Tx
Default Re: trouble codes (atotalnincompoop)

If you jumpered A and B and turned the ignition to the ON position then the fan should have come on and the service engine light would start blinking. Maybe the Service Engine bulb is burned out?
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Old Oct 3, 2002 | 04:27 PM
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atotalnincompoop
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Default Re: trouble codes (Blue88)

the service engine light is always on, it is on when i try to access the trouble codes, it just won't flash. The fan only came on one time and hasn't come on again when accessing the codes :confused:
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Old Oct 3, 2002 | 05:22 PM
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From: SE NY
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Default Re: trouble codes (atotalnincompoop)

Does the SES light go off after you start the engine?

If so, sounds like you may have a bad connection at the A or B pins of the ALDL.
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Old Oct 3, 2002 | 09:33 PM
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Default Re: trouble codes (65Z01)

the service engine light is on always, however it will not flash any codes, the pins in the terminal block apear fine :confused:
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