Yes, but it I do feel it would have to be some special circumstances to be "cold" outside and raise the idle while the engine is not feeling this same cold? Yes? I'll take that input as cold has some impact. To what extent is a little unclear. That said, Im not throwing it away as it makes sense go verify the thermal sensors...
From a mechanical standpoint, the cold coolant will open the IACV and add air. Period. It's all mechanical and no ties to the ecu. However, the ecu adds fuel based on rpm as the coolant temp is secondary in the chain events assuming the TPS is reporting the throttle plates as closed.
Think of the RPM and TPS inputs as a 12" wide paint roller covering a lot of area. Then the water temp sensor as touch up paint brush followed by the air temp sensor being a fine tip arts and craft brush.
As far as "temperature inputs go" the water temp has a bulk of the say so in regards to engine fueling... the air temp much less.
That is not say the air thermistor is not important, it is. But under no load idle conditions rpm, IACV position (based on coolant temp), and vacuum sensor call the shots....
In short a mild vacuum leak adds air so the engine adds fuel to match it until it reaches some point where it throws an error code as it simply cannot account for the "additional air" as the TPS says the plates are closed. Make sense?
At cruise and under load the rpm, tps, air temp, and vacuum sensors act as a poor mans mass air flow sensor (MAF) to determine engine load and subsequent fueling needs.
From a mechanical standpoint, the cold coolant will open the IACV and add air. Period. It's all mechanical and no ties to the ecu. However, the ecu adds fuel based on rpm as the coolant temp is secondary in the chain events assuming the TPS is reporting the throttle plates as closed.
Think of the RPM and TPS inputs as a 12" wide paint roller covering a lot of area. Then the water temp sensor as touch up paint brush followed by the air temp sensor being a fine tip arts and craft brush.
As far as "temperature inputs go" the water temp has a bulk of the say so in regards to engine fueling... the air temp much less.
That is not say the air thermistor is not important, it is. But under no load idle conditions rpm, IACV position (based on coolant temp), and vacuum sensor call the shots....
In short a mild vacuum leak adds air so the engine adds fuel to match it until it reaches some point where it throws an error code as it simply cannot account for the "additional air" as the TPS says the plates are closed. Make sense?
At cruise and under load the rpm, tps, air temp, and vacuum sensors act as a poor mans mass air flow sensor (MAF) to determine engine load and subsequent fueling needs.