Just found it on my '03 250. The plastic line running to the front hubs had fallen and burned through on the manifold. Fixed that and still didn't work. The switch on the passenger fenderwell seems to be leaking. I bypassed it with a piece of tubing and the pump shuts off. Guess I need a new switch.
How is everybody? Just bought an 03 crew cab. All stock 3/4 ton short bed 4x4. Probalby not going to do a whole lot to it. Just pulling my car trailer and normal truck stuff. Put tires on it, now I'm looking for pulling stuff. Anti sway and all that. Thanks.