How do you change a 2003 ford XLT 4wd Expedition lower radiator hose 5.4 liter engine without a oil cooler?

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2008-12-26 00:42:30

By eHow Cars Editor Replacing a leaking radiator hose can

be easy and quite painless on most cars. Check that both ends of

the leaking hose are easily accessed before attempting this repair,

because on some cars the hoses are tightly tucked away and this job

might be better left to a professional. == == == == == == == ==

Difficulty: Challenging Step1 Turn off the engine as soon as

you suspect a leak, to prevent the engine from overheating. Step2

Determine which radiator hose is leaking and exactly where the leak

is coming from by looking for wetness. Step3 Purchase 1 gallon of

antifreeze and the correct replacement radiator hose from your

local auto-parts store or dealer. (Radiator hoses are not

interchangeable. They come in specific sizes and shapes for your

particular car model.) Step4 Wait for the engine to cool down for

at least 20 minutes, before beginning any work on the cooling

system. Step5 Place a large pan or wide bucket on the ground under

the hose to catch the coolant. Step6 Use a screwdriver to loosen

the hose clamps at both ends of the hose you are replacing. Step7

Remove the radiator hose by twisting and pulling where it connects

to the radiator and engine. If the hose won't budge, use a utility

knife to cut it off the fittings. Step8 Remove the hose clamps from

the old radiator hose and slide them onto the new hose. Step9 Put

the new radiator hose on. Spray the inside of the hose ends with

WD-40 if the hose is hard to get on. Tighten the hose clamps.

Step10 Refill the radiator and the coolant reservoir with a 50-50

mixture of water and antifreeze. Step11 "Burp the cooling system"

by running the engine with the radiator cap off until the engine

warms up. Keep the engine running until both the upper and lower

radiator hoses feel warm (this indicates that the thermostat is

open and the coolant is flowing through the entire system). Burping

the cooling system allows any air bubbles to escape. Add coolant to

the radiator as needed. Step12 Look for leaks. Inspect around the

hose clamps for dampness. Tighten the hose clamps if there is any

wetness. Step13 Put the radiator cap back on. Step14 Check the

coolant level after driving, to ensure there are no leaks. · If the

leak is coming from around the clamp holding on the hose end,

tighten the clamp with a screwdriver. This may be all you need to

do if a loose clamp is causing the leak. · In a pinch, you can add

either plain water or pure antifreeze if that's all you have, but

your cooling system normally uses a mixture of 1/2 antifreeze and

1/2 water. · Never open the radiator cap or loosen a radiator hose

clamp when the engine is warm or hot. The coolant could spray out

and burn you. · Dispose of used coolant properly. Bring it to a

repair shop or parts store for recycling. Do not pour it down the

sink or into the gutter.

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