Does ford treat the under carriage metal for rust prevention ? I have an 08 ranger. Thanks, Jim

listen to where the buzzer is drivers side under dash unplug it

4x4 fuses in the owners manual. First crawl under the truck and TAP on the shift motor with a hammer. If its electric, they are notorious for the contacts rusting inside the motor. Then try it. TAP dont HIT.

Knowing how to work on braking systems?

Education

My guess --replace a failed rubber flex hose

I don't know how much moisture & rust is in the system,
so is the caliper seized also

it maybe a metal sensor, which has been replaced with a plastic sensor. not hard to change, however make sure the two hoses are in good shape, no cracks etc. may mount with two 7 mm screws. be careful...jim

Water will make metal rust. Rust will seize a motor. You probably have a bad head gasket which leaked water into the oil passages or a cracked block.

IF it's surface rust you should sand down to bare metal, prime then paint. If it's holes and you don't want to weld in new sheet metal patches then go with bondo

grind out the mounts on the body until you hit actual metal and weld some steel on it and make new mounts

What about using the drum on the other side as a guide? If it is in the same condition, then check out these general diagrams on this page. http://auto.howstuffworks.com/auto-parts/brakes/brake-types/drum-brake.htm I have a photo on my cell phone of the drums on my mother-in-laws 1991Ranger I can send you when I find that stupid mini-usb cable (if you still need it).

It is mounted on the inside of the frame rail, under the vehicle, about level with the front of the driver's side door. It can be easily overlooked, as it is protected by a metal guard that has to be removed to access it.

Check the resistor block. It is located under the hood on the passenger side firewall under the fan motor. It has two small screws holding it in place with a wiring plug attached. Clean out corrosion to restore good electrical connections. If cleaning does not restore operation a new resistor block will be required. Weatherproof the outside of the wiring plug to prevent further corrosion and reassemble.