i have a 2004 F150 and it starts and runs perfect until the ambient temp drops to severely cold ie zero or below farenheit. warms up 10+ degrees and starts perfect. anti theft light pulsates and does not go out after 3 seconds when this problem is happening. i thought i read a thread that there is a tsb out on this? any ideas?

 

i think there may be a code you can correct with your keyless entry i think its like if you press the lock button on your key chain 8 times and then the unlock i think it clears the code if thats not it look for something on this site i think i saw something like this b4 i hope i helped

 

What 2004 model do you have ?

Heritage
Lightning
New body style ?

Completing your profile would help with this.

 

it is a 2004 f150 supercab xlt styleside with a 145 inch wheelbase and the 5.4. it was manufactured on 11-03-03. im not sure what body style.

 

Does it look like this ( Scab XLT Heritage )


Or does it look like this ( Scab XLT new body style )

 

its the second pic. ( the new body style).

 

OK, the TechTip ( TSB ? ) that you might be talking about is with the PIK3 antenna.

The problem that the TechTip has :
The job aid for the additional loop is for the PIK3 unit, which may or may not help your problem.

Drop me an email via my profile, and I can send you the PDF.

The file name ( please include in your email ) is PIK3_Antenna_TechTip.pdf