Top 10 2003 Ford Ranger Regular Cab Questions & Answers

the fault is in the black box that is on the bottom of the fuel pump. his controls a solenoid which shuts off the fuel pump when hot and it sticks. You have to remove the pump and do the bypass on the electronics, easy to bypass but a days work to get the pump out to do the mod.

let me assume you have a 4 port heater control valve (4 water ports and 1 vacuum line). I have fixed several and they only leak for a short time before the valve completely breaks and you lose all coolant immediately. (not good) The leak is caused by the elbow piece that threads into the control valve. The threads just deteriorate and come apart. this repair is very easy and can be done yourself for under $30 dollars by going to your local auto store and purchasing a new one. Im also going to assume its not a hose you were specific about the valve. I guess if you were in an emergency and needed a quick repair that may or may not work long you could always epoxy or cement the defective piece together but this wouldn't be recommended except in the case that it is (a) not your car and; you dont like the owner:-). I hope this helps
Lucas

Engine Heated oxygen and catalyst monitor sensors—2.3L engine

 rough-idling engine can signal a number of positive crankcase ventilation (PCV) valve problems, such as a clogged valve or a plugged hose. But before beginning the functional checks, double check the PCV valve part number to make certain the correct valve is installed. If the correct valve is being used, continue by disconnecting the PCV valve from the valve cover, intake manifold, or hose. Start the engine and let it run at idle. If the PCV valve is not clogged, a hissing is heard as air passes through the valve. Place a finger over the end of the valve to check for vacuum.



With the engine at idle, vacuum should be felt at the PCV valve. 

here it is

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

On the 3.0L and 4.0L there are 2 HO2S (heated Oxygen Sensor) near the exhaust manifolds and 1 Catalyst Monitor Sensor after the catylitic converter

I don't know if this will help you but here are the location numbers. Can't figure out how to copy a picture of the box itself. I do have an entire owners manual I could send you as a PDF if you need it. Hope this helps. Good luck.

Description

1 50A** I/P fuse panel 2 - Not used

3 - Not used 4 - Not used

5 - Not used 6 50A** Anti-lock Brake System (ABS)

pump motor

7 30A* Powertrain Control Module (PCM)

8 20A* Power door locks, Remote entry

9 - Not used 10 - Not used

11 50A** Starter relay, Ignition switch

13 20A* 4x4 Motor 14 - Not used

15 - Not used 16 40A** Blower motor

17 20A** Auxiliary cooling fan 18 - Not used

19 - Not used 20 - Not used

21 10A* PCM memory 22 - Not used

23 20A* Fuel pump motor 24 30A* Headlamps

25 10A* A/C clutch solenoid 26 - Not used

27 - Not used 28 30A* ABS module

29 - Not used 30 15A* Trailer tow

31 20A* Foglamps, Daytime Running Lamps (DRL)

32 - Not used 33 15A* Park Lamp

34, 35, 35, 35 & 37 Not used 38 10A* Left headlamp low beam

39 & 40 Not used 41 20A* Heated oxygen sensors

Hello,

In your power distribution box in your engine compartment (Ford recommends

disconnecting your battery before servicing fuses / relays in PD BOX )

fuse # 9 - 20 amp mini-fuse for fuel pump relay and RAP module

relay # 5 - is the fuel pump relay in your PD BOX

also , the fuel pump inertia (shut off) switch is in the right front passengers

footwell by the right front kick panel.

Thanks..

On this website, you find fuse box diagram and description for Ford Ranger (2003)


Ford Ranger 2003 fuse box diagram Auto Genius

Ford Ranger 2003 fuse box diagram Auto Genius

autogenius.info