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Does Our LS1's idle in open loop?

Old 11-13-2004, 01:24 PM
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Question Does Our LS1's idle in open loop?

Just curious ,does a 1999 LS1 idle both warm and cold in open loop?Thanks
Old 11-13-2004, 01:32 PM
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once the sensors send a clean signal the car goes into open loop (many factors include cts/iat) play here. But yeah all cars have to idle in closed loop to meet Emissions guidelines. Some states/countries only test idle emissions..
Old 11-13-2004, 01:51 PM
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Ok Thank you for the info
Old 11-13-2004, 05:40 PM
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Once your ECT crosses the Closed Loop Enable ECT
threshold you will snap into closed loop operation.
This happens about 92F except when your IAT is
insanely cold.


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