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Ford freestar 2004 wiring diagram IAT sensor - 2004 Ford Freestar

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Molson02536
  • 3854 Answers

SOURCE: installing chip and want to double check wiring. Need to find IAT/MAF sensor diagram for 2003 Ford Ranger

Save your money, the chip is a ohm resistor at Radio Shack for under $2.00. It splices in to you IAT wire harness located at the intake tube between the air filter housing and throttle body.
Problem with this system is, that you can not adjust anything and have to run a constant 91 octane just to make sure you do not have a Detonation. The ECM will catch the Detonation from the knock sensor and compensate for it by retarding the timing which in turn lose of HP till next start up.
If you like and don't mind the check engine light on once and awhile, you can do the same by just disconnecting the IAT wire harness which give the ECM a 0 resistance thinking it's -20 out side and turn the timing up and lengths the injector pules.
When i was running a Nitro in the Toy before i sold it, i had installed a 10K ohm Potentiometer which you can buy at radio shack for under $5.00 i believe, I just spliced it in to the IAC wire harness so if i wanted to play with the Nitro I'ld turn the resistor up making the engine think it's 185 degrees F and would ****** the timing so i would not hurt the engine. But if i wanted to get more timing i would just turn the knob to drop the resistance to get more time since the engine thinks it's -20 out side.
Hope this helps. Keep me posted if you need more info. Best thing is to do a dyno tune and you can change everything right down to the Shift points.

Posted on May 29, 2009

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toneman2121
  • 775 Answers

SOURCE: where would i locate the IAT sensor for a 2004

it sould be located mounted on the air box where the filter is located

Posted on Apr 09, 2010

cobra777
  • 80 Answers

SOURCE: color of wires on iat sensor on a 2004 ford

I don't believe it has an IAT, (Intake Temperature Sensor). Heres what it has. Hope this helps. Cobra..
Electronic Engine Controls adobe.gif Printable View (63 KB) The electronic engine controls consist of the following:

  • powertrain control module (PCM)
  • throttle position (TP) sensor
  • engine coolant temperature (ECT) sensor
  • camshaft position (CMP) sensor
  • crankshaft position (CKP) sensor
  • mass air flow (MAF) sensor
  • heated oxygen sensor (HO2S)
  • knock sensor (KS)
The PCM carries out the following functions:
  • accepts input from various engine sensors to compute the fuel flow rate necessary to maintain a prescribed air/fuel ratio throughout the entire engine operational range.
  • outputs a command to the fuel injectors to meter the appropriate quantity of fuel.
The TP sensor:
  • sends the PCM a signal indicating the throttle plate angle.
  • is the main input to the PCM from the driver.
The ECT sensor:
  • sends the PCM a signal indicating engine temperature.
  • voltage decreases as coolant temperature increases.
The CMP sensor:
  • sends the PCM a signal indicating camshaft position used for fuel synchronization.
The CKP sensor:
  • sends the PCM a signal indicating crankshaft position.
  • is essential for calculating spark timing.
The MAF sensor:
  • uses a hot wire sensing element to measure the amount of air entering the engine. Air passing over the hot wire causes it to cool.
The front HO2S:
  • creates a voltage signal dependent on exhaust oxygen content.
  • provides feedback information to the PCM used to calculate fuel delivery.
The rear HO2S:
  • monitors oxygen content after it flows through the catalytic converter.
  • provides a voltage to the PCM used to calculate catalytic converter integrity.
The KS:
  • is used to detect engine detonation.
  • sends a voltage signal to the PCM.
  • is able to provide a signal which retards the ignition timing, as necessary.

Posted on Jun 12, 2010

taran_2005
  • 10515 Answers

SOURCE: 2004 F250 5.4L 6 pin

Hi,

Most of the models have the similar wiring. Check the one i have for 01 F250 and let me know :-

http://www.allfordmustangs.com/forums/attachments/v6-talk/24292d1172198458-need-wiring-diagram-maf-iat-6-pin-connector-2001maf.gif

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Sep 26, 2010

jturcotte
  • 8567 Answers

SOURCE: Hello, 2004 Ford Escape XLT

Hi, below is a picture of your MAF sensor. There are 6 pins visible in the connector. Does your sensor have only 5 pins? Maybe one has broke off. The second picture is the wiring diagram for the MAF/IAT assembly. The IAT is the thermister on the right side of the diagram and uses the pink wire with a black stripe and the orange wire. Is this what you needed?

jturcotte_578.jpg


jturcotte_2095.gif

Posted on Aug 14, 2011

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Where would i locate the IAT sensor for a 2004 ford freestar?


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The module is the MAFS and the IAT sensors

The IAT section is :
PCM to IAT is Gray wire
The return to the electronic engine controls from the IAt is Gray w/ REd stripe wire

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The IAT sensor is the Gray w/ Red stripe & Gray wire pairs in the connector. The connector is a 6 pin ( 1 row of 6 pins ) black connector.

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