Question about 2008 Ford F 250 Super Duty 4WD
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Posted on Jan 02, 2017
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
Posted on Mar 30, 2009
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
Here is an overview of the Engine Management System, to get the actual Wiring Diagram, click the following link http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f802e905e
Posted on Jul 20, 2010
SOURCE: 2004 F250 5.4L 6 pin
Most of the models have the similar wiring. Check the one i have for 01 F250 and let me know :-
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
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