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hachoo

IAT sensor

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You can measure its resistance with a multimeter will give you a pretty good idea.  Most Euro and japanese cars use the Bosch curve which will give about 2500Ohms when measured at 20°C (~room temp).  Most american cars use the Delphi curve which is about 3300ohms at room temp.  There's a few less common specials found on some such as honda and ford but measuring resistance is a good place to start.

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