I have a 2004 F-150 and the dash board instruments are freaking out. The emission system light, battery light, eletronic throttle control, brake light, ABS light and the door ajar light is coming on, along with the door ajar alarm going off. It also causes the a/c not to blow cold air. I've checked the fuses and relays, they are good. DOES ANYBODY KNOW WHAT THIS COULD BE?

 

 

Moved to Electrical.

 

Do a search. I and others have had the problem. I was able to solve my problem and there should be info with a search.