Intake Air temp sensor question
#15
RE: Intake Air temp sensor question
I took the entire intake system apart last weekend, and there is no temp sensor, just the air intake sensor. There might be a sensor integrated into the throttle body but I doubt it. By that time it probably doesn't matter.
#16
RE: Intake Air temp sensor question
ORIGINAL: HummerGuy
I took the entire intake system apart last weekend, and there is no temp sensor, just the air intake sensor. There might be a sensor integrated into the throttle body but I doubt it. By that time it probably doesn't matter.
I took the entire intake system apart last weekend, and there is no temp sensor, just the air intake sensor. There might be a sensor integrated into the throttle body but I doubt it. By that time it probably doesn't matter.
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#17
RE: Intake Air temp sensor question
Thanks. We appreciate all of this detailed technical information you have for us. It's a great help. How did you get to learn so much about this stuff, or should we not ask and just enjoy the great advice
#18
RE: Intake Air temp sensor question
Here are two IAT timing adder tables. One from a Silverado SS and the other from a Colorado I5. On the Colorado table below 104 F no timing is added. On the Silverado SS table, below 86F no timing is added until 23F then timing is added. If the Colorado tune is like H3, then unless your IATs are above 104 then any IAT skewing will not be effective while you are moving. I did some testing and with the stock air box, the air temp can get this high (+104F) after sitting at a long red light while it is about 80 F outside. The IAT skewing for me removed the sluggeshness when pulling out.
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[IMG]local://upfiles/774/5D1DCC0A57D5486CAD3432D2AEF43D81.jpg[/IMG]
[IMG]local://upfiles/774/4142A8BD8A694C0099AAFF7840553979.jpg[/IMG]
#19
RE: Intake Air temp sensor question
So what you are saying is adjustments aren't really made unless the air going into the engine is warmer then 104? Does the MAF sensor have a temp sensor built into it? Where is the temp sensor?
#20
RE: Intake Air temp sensor question
Yes....[sm=headbang.gif]
This is the MAF and intergated into this very same thing is the IAT sensor too.
5 wire connector
The gimmicks on Ebay are a fixed resistor to tell the PCM the intake air temp is cold...so as you see from the schematic (thanks to Chevy) the IAT is shown as a variable resistor on the tan and black wires..as it heats up the resistance goes down.
This is the MAF and intergated into this very same thing is the IAT sensor too.
5 wire connector
The gimmicks on Ebay are a fixed resistor to tell the PCM the intake air temp is cold...so as you see from the schematic (thanks to Chevy) the IAT is shown as a variable resistor on the tan and black wires..as it heats up the resistance goes down.