Great post.
I got a Crazy cruise control problem too!
PLEASE HELP!
I have a 2002 Ram 1500 SLT 4.7 4WD
I recently moved from FL to TX. I towed a loaded down 6x12 U-Haul trailer. The cruise control worked perfect for more than half the trip. After a regular stop for gas I got back on the highway and the cruise control stopped working properly. When I push the CRUISE ON/OFF button the dash light that says CRUISE would light, but when I push the SET button it would not set the speed.
I know most often this is the result of a vacuum leak; I've triple checked, I do not have a vacuum leak. Through hours of research I learned the brake switches can go faulty. I lifted up on the pedal to make sure it was causing the cruise control the think the pedal was being slightly pushed, no effect. I then checked the cruise control unit itself, some other posts said their servos got stuck. None of my servos were rusted or stuck.
I do not know if it was a result of this check or coincidence but now when I push the CRUISE ON/OFF button it only stays on for a few seconds, sometimes it's on for two seconds sometimes it's on for longer, but it always goes out. Once it goes out it will not come back on until I shut the truck off and start it again.
Someone said the brake switch supplies some power to the unit somehow so I replaced it to be sure, again not effect. I've taken the steering covers off to check for cut or shorted out wires, everything looks good.
I can't think if any other ideas.
Any help would be GREATLY appreciated.
THANKS!!!