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2012-07-03T04:32:40Z

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[[Category:How To]]
[[Category:Engine]]
==Intake Air Temperature Sensor (IAT)==
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==Aftermarket IAT Sensor Wiring==
If you want to use an aftermarket IAT sensor when replacing the stock MAF you want to wire it like this:

[[Image:IATWires.jpg]]

#Green With Yellow Stripe: 5V power for Baro Sensor (Pin 61 on 91-93 ECU)
#Orange: Baro Singal to ECU (Pin 65 on 91-93 ECU)
#Blue with Yellow Stripe: Airflow Signal to ECU(Pin 70 on 91-93 ECU)
#Red: Power for Airflow sensor, (To Control Relay)
#Black: Ground for IAT, Airflow and BARO signal (Pin 72 on 91-93 ECU)
#Red with Blue Stripe: IAT signal going to ECU (Pin 52 on 91-93 ECU)
#Red With White Stripe: Air Flow sensor Reset Signal (Pin 19 on 91-93 ECU)
#Not used :

[[Image:MAF18.jpg]]

[[Image:Mafwires.jpg]]

==Most Standalone ECUS use GM IAT Sensor==

[[Image:GMIAT.jpg]]

Found at GM parts Direct: http://www.gmpartsdirect.com/

GM IAT Sensor : 25036751
Pig Tail : 12102620

Engine: Troubleshoot Intake Air Temperature Sensor (IAT) - Revision history

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