Cruise Control Problems, 1996 Dodge B3500, 5.2L
Our cruise control just started acting up. It worked perfectly in the past. The green light comes on when we turn the cruise control on. But nothing happens when we press the "set" button. When pressing the "set" button, the van does not accelerate so we can designate a constant speed. Sometimes, if we fiddle with the "resume" button and the accelerator pedal, the cruise control kicks in. (possibly at a previously set speed?) But, even after doing the "resume" button/accelerator pedal fiddling, the speed doesn't remain constant; sometimes the van keeps accelerating without pressing the accelerator. The cruise always turns off, as it should, when the brake pedal is depressed.
Where do I start checking? Is the switch on the steering wheel bad? The cruise servo module? The cruise vacuum canister? The Dodge Service Manual says the cruise servo module and vacuum canister are located behind the passenger-side front fender extension, but I wanted to get some opinions before I started digging into anything.