To start its a 99 f150v6. I've been reading on my issue for about a week and it seems to me that its the pats anti-theft system..
What happens is most of the time it starts right up. The security light will blink and I then know it will start. When it doesn't start the security light stays on about 5 seconds when ignition is in the on position. From what I've read that means there is a possible issue with the module.
I have a few questions on this. Is the module located in the kick panel on the driver side? I pulled it off and noticed 2 sets of wires going to what looks like maybe 2 modules or connectors.
It was suggested to me to put a multimeter on one of my keys and determine the resistance and wire a resistor directly in the correct wire. Would that be the cheapest and most efficient route to take? I don't know how much the actual module is, but I don't have a lot of money to throw at this problem at the moment. I found a small diagram on the security system on this truck and I guess this would be the wire to work with?
Factory Alarm Disarm Wire (-): Dark Green/Purple
Factory Alarm Disarm Wire Location: Driverís Kick Panel
If the previously suggested route wouldn't work or be best I was also suggested a aftermarket system be put in to bypass it. Like I said before I don't have money to throw at this so I want to avoid spending as much as possible.
Basically any suggestions as to a cheap fix to this would be GREATLY appreciated!! I did a quick search on these forums for my same issue and couldn't find any new info and this seems to be a common problem.