Question about 2002 Ford E350

1 Answer

2008 E-350 IAT sensor wires

Which or the 6 colored wires leading to the sensors inside the filter housing are the wires for the IAT?

Posted by on

  • 7 more comments 
  • mike_ledbett Nov 11, 2008

    i bought a chip from SLR Motorsports that gets installed onto the two wires that go to the IAT sensor. There are 6 wires in that harness so I'm not sure which two actually go to the IAT sensor. My E-350 is getting about 7.5 - 8.4 MPG. This chip is supposed to help better the mileage

  • mike_ledbett Nov 12, 2008

    Yes, that appears to be it.

  • mike_ledbett Nov 12, 2008

    I understand that there is no "big improvement" by installing anything on the V-10 E series. I would be happy to get even 8/10ths of a MPG. if this chip gives me any improvement at all I would be happier than what i am now. Our 2003 E-350 with the V-10 gets a bit over 11 MPG and has 135K miles on it. BTW, the 03 has the same IAT sensor plug as the 08 does. Do you have the IAT info for the 03 by chance?

  • mike_ledbett Nov 12, 2008

    i was hoping to run this module for aobut 5-10 tanks of gas. if nothing improved then i would yank it out. I do mainly freeway driving with this work truck too.

  • wood tic Apr 16, 2009

    Could you tell me the color of the two wires that go to the iat on a ford e350 2005 so I can hook up a performance chip . Thanks Achille.

  • paul erickson
    paul erickson May 11, 2010

    what do you need to know the the wire colors what is your problem you are trying to dianoise

  • Anonymous Mar 15, 2014

    for a 92 lexis sc 400 what are they wire color IAT sensor,there only 2 wire but there 5 in connect; please help

  • Anonymous Mar 15, 2014

    for 92 lexus sc 400 v8 IAT wire color?

  • Anonymous Mar 15, 2014

    for 92 lexus sc 400 v8 IAT wire color?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 674 Answers

Is this what you recieved?2008 E-350 IAT sensor wires - 9af2263.jpg

Posted on Nov 12, 2008

  • 1 more comment 
  • paul erickson
    paul erickson Nov 12, 2008

    i sure didnt find out anything good about this chip

    im always looking for ways to increase my MPG

    just to show you what is inside this pack and from what i have found no one has had any luck with this chip. and also my books only go to 2006 for your van.

  • paul erickson
    paul erickson Nov 12, 2008

    hey i just call a good friend of mine who is a ford master tech and he had a 2007 for f150 come into his shop with one of these tha had an engine melt down . what he told me was this is just a resistor and changes the valvue of what the computer sees the air temp is . so it tell the computer that the outside temp is warmer than it realy is . and this leans out the fuel mixture.

    and voids warranty. ford has put out a service bulliton on this chip.

    just hate to see ya cause more problems

    the only programer i have seen that works is the hypertech and it only somtimes get 1 mpg better

    let me know what you do

    thanks paul

  • paul erickson
    paul erickson Nov 12, 2008

    Well since the intake air temp is read on the MAF its the gray wire The signal return wire is gray with a red tracer

    let me know how it does



1 Suggested Answer


6ya staff

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


The IAT sensor is mounted to the intake air duct housing. This sensor is usually integral to the mass airflow sensor. Carefully remove and inspect.the inside for any contamination or foreign material. Pin 1 and 3 have same wire color black/pink. It should read 1.9 - 2.1 kilohms at 25 degC. The fast check is to repkace it with a known good sensor. The next check possible is the wiring, and signals from the ecm. ?

Jul 03, 2018 | Nissan Cars & Trucks

1 Answer

What color are the wires fot iat sensor on a 2012 suzuki rx4

your getting ready to hack it, are you.
you read that in the script kiddies sites. right?
it dont work.
most IAT are near the air filter or in the filter box lid.

i sure is not bad, they never ever fail, (short of hammer hits) hacking..
short story,
02 sensor corrects all errors you cause in IAT, you lose.
wot , the car already runs 12.5:1 AFR so missing up perfect is a LOSS.

Mar 02, 2013 | 2012 Suzuki SX4 Base Sedan 2.0L 4-cyl....

1 Answer

I need to locate the iat for 2012 Ford Triton V-10 6.8 liter plus wire colors for the two wires that supply the iat

That sounds like a Mass Air Flow sensor. Why are you checking it? What are your symptoms? Make sure your air filter is clean.

Aug 18, 2017 | Cars & Trucks

1 Answer

What color wires lead to the IAT sensor on a 2005 ford f250 6.0 powerstroke?

Hello! The Intake Air Temperature (IAT) sensor has the following wire colors...Gray/Red and Gray...


I’m happy to help further over the phone at

Jan 04, 2011 | 2005 Ford F 250 Super Duty

3 Answers

I'm trying to locate the IAT sensor plug . theres so many sensors in the same area that I cant determine which one it is .

I'm sending you a illustration of the IAT Sensor location only 2.4L engine.
Mitchell on demand does not have a illustration for the 3.4L engine but they say its at left side of engine compartment. I hope this will be of some help.d15406a.gif

Oct 04, 2009 | 2000 Pontiac Grand Am GT

1 Answer

Cant find IAT on 99 jeep grand cherokee laredo...

Intake Air Temperature sensor.

It has to be installed ->BEFORE the throttle body, to sense the density of the air entering the intake manifold, based upon intake manifold temperature.

It provides an input voltage to the PCM, (Powertrain Control Module)
It's a Negative Thermal Coefficient sensor, (NTC. It uses two wires)

Meaning, as intake manifold temperature Increases, resistance in the sensor increases.
(Less voltage)
As the temperature Decreases, resistance in the sensor Decreases. (More voltage)

The PCM then uses this input to calculate the following;
1.Injector-Pulse Width
2.Adjustment of spark timing.

Just thought you might want to know.

Wish I knew what size your engine is.
A. The IAT in the 3.7 Liter engine, is located in the Left side, {Drivers} of Intake Manifold Plenum. (BEFORE the throttle body)

See that plastic 'snorkel' tube, that comes from the air cleaner housing, and goes to an oval shaped aluminum housing? That oval shaped, {On the end}, housing is the Intake Manifold Plenum.

The 4.7 Liter engine has the IAT in the same place.
The 4.0 Liter has the IAT installed INSIDE, the Front of the Intake Manifold Plenum. (Before the throttle body)

The color of the two wires are Brown with a Yellow stripe, (Thick 20 gauge wire), and Black with a Red stripe. (Thinner wire. 18 gauge)

Aug 07, 2009 | 1999 Jeep Cherokee

1 Answer

Need location of IAT sensor on 05 F150 5.4L

the IAT is a small round sensor with 2 wire going to it, the sensor is located in the air filter housing lid or in the flexible air intake hose to the engine from the air cleaner box.

here is a picture

Mar 30, 2009 | 2005 Ford F-150

1 Answer

What color are the wires for the iat sensor on a 2009 f-150 w/ 5.4 l

the iat is part of the maf sensor located in the air filter duct or housing. 6 pin connector. pin one color violet/gray is for iat. pin 2 is c-signal rtn yellow/violet. pin 3 maf yellow/violet. pin 4 maf rtn blue. pin 5 ground black/yellow pin 6 circuit breaker fuse 76 blue/brown

Mar 05, 2009 | 2009 Ford F-150

2 Answers

IAT sensor

The IAT (Intake Air Temperture) is the sensor that measures the temp of the incoming air to the engine, it is either in the rubber hose to the engine from the air filter housing, or on the air filter housing itself, it is small and round with 2 wires going to it, many times it is left unplugged during routine maintenance.

Oct 09, 2008 | 2003 Ford Excursion

2 Answers

Mazda 6s IAT or MAF Wiring Schematics

What are the colors of the two IAT wires in the MAF sensor?

Aug 02, 2008 | 2004 Mazda 6

Not finding what you are looking for?
2002 Ford E350 Logo

Related Topics:

545 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

85222 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

gerry bissi

Level 3 Expert

4388 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides