At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The New Body Style 5.4 does not have an IAC, this is controlled by the throttle position motor on the side of the throttle body, and is operated by the PCM ( new body style is throttle by wire ).
If this is a 2004 Heritage or lightning ( the same body style as the 97-03 MY ) the IAC is on the back the throttle body, held on with 2 8mm screws. You would need to remove the plastic throttle body cover to get to it.
If this is a new body style 2004, check the shift interlock fuse, cab fuse panel F16. If the fuse tests good with a meter to both sides ( to ground when pressed down power should be there ) check both the Tan w/ REd stripe wire and the pink w/ light green stripe wire , it would be a case of needing a new shift interlock solenoid.
If this is an old body style truck, check the stop lamp / brake light fuse. The shift interlock uses the same fuse for both.
If you replaced the tail lamps with LEDs in either 2004 version, and did not use load resistors, this could be the source of your problem ( truck thinks the brake lamps are out ). You would need to install load resistors on them.
The heritage model were 2004 model year built trucks that looked like the previous 97-03 body style trucks for buyers who rathered those trucks. all were built in canada. The 2004 f-150 was of the body style closer to the 2004-2008 line. basically it was to diferentiate between the two totally seperate trucks.
So if your truck looks more like a 2005 or 06 than a 2002 or 03 I would say it is not a Heritage. Also, I am sure the dealer could tell you just from the vin number.
Check out www.crutchfield.com under the "outfit my car" section and it will give you the specs. Assuming this is the new body style, their site says all speakers are 6x8
×