Cleaning the IAT sensor - Diesel Bombers

Go Back  Diesel Bombers > Dodge Cummins > Dodge Diesel Tech Articles
Cleaning the IAT sensor >

Cleaning the IAT sensor

Dodge Diesel Tech Articles All Years of Cummins Tech Talk

Cleaning the IAT sensor

 
 
 
 
  #1  
Old 06-24-2007, 07:25 PM
Whit's Avatar
Site Mascot
Thread Starter
Join Date: Mar 2007
Location: Why-homing
Posts: 16,010
Thanked 939 Times in 701 Posts
Default Cleaning the IAT sensor

The IAT sensor measures the temperature of the intake manifold. The ECM uses this sensor reading to set injection timing and adjust the air-fuel ratio. If the fuel mileage and power output of you engine seem low, some owners have found improvement in EGT, fuel economy, and power after cleaning carbon from the IAT sensor in at the rear of the intake manifold. Engine with exhaust brakes are particularly prone to IAT sensor fouling because soot is blown back into the intake during valve overlap. Smokingdiesel.com has an information page about problems caused by the IAT sensor.

The only tool you need is a 3/8" ratchet with a 6" extension and 13/16" socket.

The IAT sensor is found on the driver's side of the engine, almost at the back of the intake manifold.




Temperature
Resistance

30°
40K

32°
30k to 36k ohms

76°
13K ohms

77°
9k to 11k ohms

81°
6.87K ohms

122°
3k to 4k ohms

130°
4K ohms

167°
600 to 675 ohms

212°
600 to 675 ohms


Replacement Sensor:

Cummins PN 3408345

Dodge PN 05014197AA Sensor, Temperature (SEN, TEM)
 
Attached Thumbnails Cleaning the IAT sensor-iat_cl15.jpg  

Last edited by Whit; 08-31-2007 at 12:20 PM.
The Following User Says Thank You to Whit For This Useful Post:
Jet A Fuel (10-27-2015)
  #2  
Old 06-24-2007, 07:34 PM
Uncle Bubba's Avatar
BOMBARDIER
Join Date: Mar 2007
Location: Illinois?
Posts: 12,854
Thanked 1,110 Times in 698 Posts
Default

Forgot what to clean it with. Only use carb or electronic aerosol cleaners on these sensors. Anything else will leave reisdue that will distorte the readings.
 
  #3  
Old 06-24-2007, 07:38 PM
Whit's Avatar
Site Mascot
Thread Starter
Join Date: Mar 2007
Location: Why-homing
Posts: 16,010
Thanked 939 Times in 701 Posts
Default

good point slick...thanks
 
  #4  
Old 06-24-2007, 07:45 PM
Dr. Evil's Avatar
BOMBARDIER
Join Date: Mar 2007
Location: North of You
Posts: 23,293
Thanked 1,319 Times in 1,070 Posts
Default

Originally Posted by 99 cummins View Post
Forgot what to clean it with. Only use carb or electronic aerosol cleaners on these sensors. Anything else will leave reisdue that will distorte the readings.


Dont use carb cleaner

Electric contact cleaner is available at most parts stores and is the best thing to use.
 
  #5  
Old 06-30-2007, 12:59 AM
JPR Ram's Avatar
Diesel Fan
Join Date: Jun 2007
Location: Murrieta, Ca. (SoCal)
Posts: 54
Thanked 3 Times in 3 Posts
Default

Starting fluid (ether) will also work excellent.
 
  #6  
Old 07-08-2007, 04:22 PM
2001shrtbedcummins's Avatar
Diesel Bomber
Join Date: Mar 2007
Location: Summerfield,Florida
Posts: 3,529
Thanked 169 Times in 150 Posts
Default

for a stock truck...you don't need to do this till well past 100k most of the time...did the old 2001 at 85k and it was clean as a whistle. Do third gens have em?
 
The Following User Says Thank You to 2001shrtbedcummins For This Useful Post:
wildbill (06-12-2008)
  #7  
Old 06-12-2008, 05:12 PM
wildbill's Avatar
BOMBARDIER

Join Date: Jul 2007
Location: Baker, MT
Posts: 12,808
Thanked 666 Times in 552 Posts
Default

Wondering the same thing.
 
  #8  
Old 06-12-2008, 05:18 PM
Whit's Avatar
Site Mascot
Thread Starter
Join Date: Mar 2007
Location: Why-homing
Posts: 16,010
Thanked 939 Times in 701 Posts
Default

Yes a 3rd gen has an IAT

and if you run a exhaust brake you should clean the IAT every 10k.............its amazing the difference

I cleaned my buddies at around 50k, he has no brake and yes it was carboned up somewhat......you could hear the diff in the idle before and after the cleaning
 
  #9  
Old 05-25-2009, 03:35 PM
Join Date: Mar 2007
Location: Western NC
Posts: 14,546
Thanked 843 Times in 695 Posts
Default

We always use MAF Sensor Cleaner
 
  #10  
Old 09-19-2009, 01:10 PM
fahtb0y's Avatar
Diesel Fan
Join Date: Aug 2009
Location: Yuma, AZ
Posts: 99
Thanked 6 Times in 6 Posts
Default

i checked mine yesterday and the little white thing at the end of the brass fitting wasn't there
 

Thread Tools
Search this Thread
Quick Reply: Cleaning the IAT sensor


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.