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Engine IAT/MAT sensor replacement/upgrade

  • Thread starter Thread starter AUBURN1111
  • Start date Start date Jun 23, 2019

AUBURN1111

Founding Member
Oct 17, 2000
560
20
49
Mobile, AL
Jun 23, 2019
#1
  • Jun 23, 2019
  • #1
Any one have suggestions on a better IAT or MAT sensor, I keep killing these every few months? You can see the two wires that sit in the end of the sensor are missing and when it fails data logs show 69.9ºF all day long.


 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,255
17,939
224
Massachusetts
Jun 24, 2019
#2
  • Jun 24, 2019
  • #2
What brand sensors are you using?
 

AUBURN1111

Founding Member
Oct 17, 2000
560
20
49
Mobile, AL
Jun 24, 2019
#3
  • Jun 24, 2019
  • #3
Original was Ford, the most recent was Autozone replacement Duralast.
 
Last edited: Jun 24, 2019

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,255
17,939
224
Massachusetts
Jun 24, 2019
#4
  • Jun 24, 2019
  • #4
I'd stick with Ford.

I went as far to hop on ebay and try and find some old stock NOS motorcraft parts. A lot of the aftermarket stuff these days (sometimes included new motorcraft) is just junk
 
Reactions: My92cashtrap

AUBURN1111

Founding Member
Oct 17, 2000
560
20
49
Mobile, AL
Jun 25, 2019
#5
  • Jun 25, 2019
  • #5
Im considering moving the IAT to the super charger discharge tube and maybe to use one of the newer/faster reacting ones like the GM version. I see mixed reviews on moving it, but the stock location seems to get heat soaked while in the staging lanes.
 

a91what

SendMeUrDataLog
10 Year Member
Apr 6, 2011
10,739
6,721
214
Hillsborough county
Jun 25, 2019
#6
  • Jun 25, 2019
  • #6
There is a way to deal with the heatsoaked sensor with the MS system. I can show you how to do it, pretty simple.

Tuning the MAT / CLT Correction Table - DIYAutoTune.com

The Manifold Air Temperature sensor is intended to measure the temperature of the incoming air. However, the sensor also absorbs heat from the intake manifold or intake tube – and often the manifold transfers more heat to the sensor than it does to the incoming air. To deal with this, the latest...
www.diyautotune.com

now moving the sensor is going to require a small amount of retuning, due to the MAT based fuel trims. I do advocate for moving the sensor and using a newer GM style sensor.
 

AUBURN1111

Founding Member
Oct 17, 2000
560
20
49
Mobile, AL
Jun 25, 2019
#7
  • Jun 25, 2019
  • #7
@a91what Thanks! Did not know you could do that, I'll have to get a good data log with a working IAT and try it.
 
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