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Re: High idle on each start
Quote:
Originally Posted by Boog
At what temp is the ecm supposed to switch from closed loop to open loop? 195?
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My guess is you will not be able to find exact criteria on this.
It takes three things to get to closed loop:
A certain amount of time must pass
The coolant temperature must be “warm”
The oxygen sensor must be warm enough to generate a working signal for the ECM
I have training manuals from General Motors which were used and the GM training Centers and I don't think they even have this criteria anywhere in them.
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
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