How to change speedometer fro km to miles on 2014 jeep cherokee

SOURCE: 2002 Jeep Grand Cherokee Lardo misfiring

You say you changed the cam sensor. A1391 code is a crank sensor on the top of the trans. bell housing.

SOURCE: speedometer does not always work 95 cherokee orvis need help

Sounds like the speedo sensor needs to be replace on the transmission. I've had a similar problem with my Jeep with the sopeedo not working then work after the tranny heats up then after a period of time the needle started to jump when at 100 km or 60 mph. I changed the sensor and the problem went away. Good luck!

SOURCE: Speedometer does not always work HELP 1995 jeep cherokee orvis

The vehicle speed sensor and speedometer are one in the same on this model I believe. If one goes out it takes the other with it if its all electronic and not cable driven.

SOURCE: 2000 jeep grand Cherokee: engine overheating.

first, check that your oil level is full. Though it should not cause an overheat, oil does serve as part of the cooling system... Changing the oil should not have much to do with an overheating problem unless inadvertently the radiator, a hose or the cooling fans got damaged. Carefully check everything for leaks, make sure the cooling fans come on when hot.
After checking those things you will need to check the thermostat and the radiator for proper operation. If you do not have a blown head gasket one of these items are causing your problem. Before you ask...the water pump will work even when the seals are leaking or the shaft bearings are bad. If either of those two conditions exist the pump should be changed, otherwise it is not causing your problem.

SOURCE: 1993 jeep cherokee

It also sounds like a more likely problem is a seized caliper on the left side. If a caliper seizes, the braking system transfers the pedal pressure to the other caliper thus, the working caliper locks up. Pull both front wheels and look carefully at the wear on the pads. Both wheels should have the same amount of wear. If one side is worn more than the other, the side with the least wear is seized and needs to be changed.
Never heard of a hydraulic repostioning valve, but maybe with ABS there is one. I do know of a proportioning valve which apportions brake pressure front to back and also blocks braking to front or back in the event of brake line failure. Maybe see which he is talking about, should be able to explain the difference. Hope this helps.