*Intake Air temp IAT - A

10-30-2005, 10:11 PM

Applys to all 98.5 and up Cummins.The intake air temp sensor is located on the drivers side of the motor just above the lift pump and rearward of the fuel filter on the intake manifold. The IAT sensor reads the manifold air temp and sends a signal to the ECM to regulate intake ait grid heaters,fuel timing,fuel control, As fuel to air temps vary the sensors resistence changes the signal to the ECM. It has been my experience that if an exhaust brake is used that the IAT can become fouled with soot and the sensor becomes inaccurate, I personally clean mine every 10k miles with carburator cleanor, this make the allmighty Cummins happy and idles better as well as better overall performance including MPG.

Cheers, Kevin

Last edited by Andy : 04-03-2007 at 10:22 PM.

11-14-2005, 11:34 PM

Great tech article and pics of the IAT cleaning HERE

Last edited by R-N-R : 03-10-2006 at 11:44 PM.

***Mopar1973Man*** · 11-29-2006, 10:50 PM

I've got a write up as well that is very similar...

IAT Sensor Cleaning and Testing...
IAT Sensor

And Map Sensor Cleaning...
MAP Sensor

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

10-30-2005, 10:11 PM	#1 (permalink)
Guest Posts: n/a	Intake Air temp IAT - A Applys to all 98.5 and up Cummins.The intake air temp sensor is located on the drivers side of the motor just above the lift pump and rearward of the fuel filter on the intake manifold. The IAT sensor reads the manifold air temp and sends a signal to the ECM to regulate intake ait grid heaters,fuel timing,fuel control, As fuel to air temps vary the sensors resistence changes the signal to the ECM. It has been my experience that if an exhaust brake is used that the IAT can become fouled with soot and the sensor becomes inaccurate, I personally clean mine every 10k miles with carburator cleanor, this make the allmighty Cummins happy and idles better as well as better overall performance including MPG. Cheers, Kevin Last edited by Andy : 04-03-2007 at 10:22 PM.*

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11-14-2005, 11:34 PM	#2 (permalink)
Guest Posts: n/a	Great tech article and pics of the IAT cleaning HERE Last edited by R-N-R : 03-10-2006 at 11:44 PM.

11-29-2006, 10:50 PM	#3 (permalink)
*Mopar1973Man* www.Mopar1973Man.com Join Date: Feb 2006 Location: New Meadows, Idaho Posts: 11,043 Thanks: 209 Thanked 584 Times in 457 Posts Mopar1973Man's Truck Pics	I've got a write up as well that is very similar... IAT Sensor Cleaning and Testing... IAT Sensor And Map Sensor Cleaning... MAP Sensor __________________ Michael Nelson - 2002 Dodge Cummins For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer Remember to smack the *THANKS!* button for those that helped you or you think that post is helpful to others!