LS1TECH - Camaro and Firebird Forum Discussion - Does Our LS1's idle in open loop?

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Pro Mouse

Nov 13, 2004 01:24 PM

Does Our LS1's idle in open loop?

Just curious ,does a 1999 LS1 idle both warm and cold in open loop?Thanks

samz28

Nov 13, 2004 01:32 PM

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..

Pro Mouse

Nov 13, 2004 01:51 PM

Ok Thank you for the info

jimmyblue

Nov 13, 2004 05:40 PM

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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