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

Open/Closed loop

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Old Jul 31, 2009 | 02:40 PM
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Default Open/Closed loop

Awhile back I saw a posting on how to check for closed loop without a scanner. I saved it but unfortunately had to reformat hard drive. I've tried to search it out but to no avail.... If anyone knows of a procedure please inform me. Thank you
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Old Jul 31, 2009 | 03:19 PM
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Jump "A" and "B" on the ALDL, start car, watch SES light.
Closed loop, 1 flash per second
Open loop, 2.5 flashes per second
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Old Jul 31, 2009 | 03:19 PM
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http://members.shaw.ca/corvette86/No...it%20Check.pdf
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Old Jul 31, 2009 | 04:20 PM
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Thanks Agent86 your the shiznit!!! You always got the info!!!!
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Old Jul 31, 2009 | 05:08 PM
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Default Agent 86

Originally Posted by AGENT 86
Jump "A" and "B" on the ALDL, start car, watch SES light.
Closed loop, 1 flash per second
Open loop, 2.5 flashes per second

Thank you for that tip! Never knew that.

Corvette Mike
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Old Jul 31, 2009 | 05:22 PM
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Originally Posted by AGENT 86
Jump "A" and "B" on the ALDL, start car, watch SES light.
Closed loop, 1 flash per second
Open loop, 2.5 flashes per second
what year C4's does this trick work on?
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