Question about 2004 Ford F150
Posted by Anonymous on
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Posted on Jan 02, 2017
Could be a problem with the vac lines to the IWE ( Integrated Wheel Ends ), or a problem with the IWE solenoid, or a problem with the vent from the IWE.
Start with checking the vac lines, to make sure they are not cracked.
The vac res & IWE solenoid are behind the battery. Here is a diagram of the parts in the IWE vac system
There was a TSB for the 2004-2006 MYs with a bad design IWE solenoid, but this usually was coupled with noise in 2WD.
Start with checking the VAC lines and the vent, next would be to check the IWE solenoid.
Here is the PDF of the TSB on IWE solenoid
Posted on Nov 28, 2009
There is a special sequence for that. Let me see if I can remember... Pull to a level surface, put the parking barake on, put the truck in neutral, shift to four-wheel drive, release the brake, shift to drive.
The computer waits for this sequence. It has been many years since I did this. If it doesnt work, call your dealer shop and they will tell you the correct sequence.
Posted on Dec 21, 2009
I had the same thing happen this weekend.Ij ust talked to my service man and he said if all the fuses are good it might be the switch on the dash.
Posted on Jan 26, 2010
You most likely have a bad spark plug coil and or plug. First recomendation go to your local parts store and have them put a code reader on it. It should tell you what cylinder is missfiring under load. Once you identify replace the coil. Cost $45-$60. Also replace the plug. After this you should be back in business. This is common with the 5.4L engine. Depending on the cylinder involved the coil can be difficult to get to so take your time. Definently and easy do it yourself repair.
Posted on Sep 24, 2010
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