NA 97 IAT Sensor calibration
 

Hey,

When the car is cold (a few days cold) the CLT reading is the same as ambient and IAT is 8C lower...

The calibration values I used are the same for both:
bias resistor setting of 2490 ohms:

Temperature F / C Resistance In Ohms
-4 / -20 16150
104 / 40 1150
176 / 80 330

I lowered the IAT bias settings to 1800 and now the IAT is the same as CLT when cold.

Have I done good ?

Thanks !

Iat = mat

My bad,

CLT, not MAT