I have an '01 F150 and it won't start. At first my odometer read blank and the theft light kept blinking. I saw someone here had a similar problem and many suggested he try switching keys. I used my spare and it started. I took my girlfriends key off my keychain and it worked a few times after that. Then it wouldn't start again. I also read that someone suggested the battery might be dying so I went out and got a new battery and it still won't start. The engine turns and makes like it wants to start but it won't. Now it won't start with either key. Any ideas and/or suggestions?
Try adjusting the anti-theft needle valve or the roll-over prevention spring.
Mine did the bucking/theft light thing back in the day, but not the gauge sweep.
Then one day, the truck just died.
My K&N intake that I had at the time came with the wrong mounting hardware, and allowed the filter to slightly rub the wires under it. Some wires to the ECU were chaffed, and eventually shorted out the ECU.
Thankfully, K&N paid for the repair.
You could take a look under the steering column cover, to see if the PATS transceiver is loose. If this is loose, it could cause issues with reading the RFID on the key.
I discovered that the fuel pump relay feeds the odometer also. So to test I pulled the relay and tried to start the truck. Doing this gives me the same symptoms as my intermittent starting issues. This problem was always worse when it rained or rapid temp changes occurred or it was just real cold out. New fuel pumps relay and no problems so far. The relay was triggering a PATS issue due to the connection with the instrument cluster. At least now I know what circuit is giving me problems and if the problem comes up again I can trace this circuit, I hope this info helps someone out.
When these 2 loose communication, '------' and THEFT is what you get. Possibilities are loss of ground or power, connection problems, aftermarket installations, loose fuse tap ins.
This is a bunch of different posts I found in relation to this problem. I will follow all leads and post reply. I removed the superchip and got new battery today