Funny IAT readings
#1
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Funny IAT readings
Hey Guys
i have an MSPNP2 with the diyautotune IAT sensor wired into the AFM wires as per instructions.
Recently i've noticed the wideband reading very rich seemingly randomly. i plugged into the laptop and saw my IAT reading were all over the place from -20 to +20 Celsius.
I rewired it last night and did a log from cold today.
It seems like the temperature reading are weird all the way up until the CLT is above 82 Celsius.
i've attached two logs. the first one is from cold and the second is when the CLT starts to rise above 80.
Note i work in Celsius not Fahrenheit!
Any thoughts? i have no idea how long this has been happening..
i have an MSPNP2 with the diyautotune IAT sensor wired into the AFM wires as per instructions.
Recently i've noticed the wideband reading very rich seemingly randomly. i plugged into the laptop and saw my IAT reading were all over the place from -20 to +20 Celsius.
I rewired it last night and did a log from cold today.
It seems like the temperature reading are weird all the way up until the CLT is above 82 Celsius.
i've attached two logs. the first one is from cold and the second is when the CLT starts to rise above 80.
Note i work in Celsius not Fahrenheit!
Any thoughts? i have no idea how long this has been happening..
#15
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same thing different acronyms.
I'm assuming you had diy build your MS. They would have wired the AIT correctly to match your model year and have the AIT/AIT/MAT sensor come in on stock wiring. Apparently they also wire it so you could bring it in on the db15.
I'm assuming you had diy build your MS. They would have wired the AIT correctly to match your model year and have the AIT/AIT/MAT sensor come in on stock wiring. Apparently they also wire it so you could bring it in on the db15.
#16
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Ill keep looking for a reason behind the funmy readings then. The sensor reads 70f which you said means disconnected? But every so often it reads - figures and rarely it reads seemingly correct figures.
I found an ecu pinout diagram, so ill check and see what voltages it reads and the temp its reading and report back.
I found an ecu pinout diagram, so ill check and see what voltages it reads and the temp its reading and report back.
#18
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Ive cut and spliced the wires from the sensor into the loom so its definitely not that. Ill investigate at the ecu after work in a few hours.
Could the sensor just be a bad one? I have a feeling it never worked correctly
Could the sensor just be a bad one? I have a feeling it never worked correctly
#20
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So first things first
Ill check the resistance between the two sensor wires, and note what the outside temp is.
Then ill check the resistance between the two wires that are for the afm at the ecu pins?
Then visually check the sensor
Ill check the resistance between the two sensor wires, and note what the outside temp is.
Then ill check the resistance between the two wires that are for the afm at the ecu pins?
Then visually check the sensor