DIY 4.6L & 5.4L Cooling System business - Flush, Thermostat, & Hoses

Engine coolant breaks under over time, stimulating corrosion and also leaving deposits in the engine"s cooling system. Flushing the cooling mechanism periodically promotes longevity that the radiator and maximizes cooling device performance. It is equally necessary to on regular basis replace the thermostat and radiator hoses, which can, crack, become soft, and lose their integrity. While a usual flush entails special devices that pumps new coolant with the engine and also collects the old fluid, the procedure explained herein is just as effective and, best of all, can be carry out by anyone with an easy DIY skills.


Related Topics:


Ford F-150 infection Service
5.0L, 5.8L V-8 Thermostat Replacement
4R70W Transmission organization & Filter Replacement
4.6L, 5.4L V-8 Starter Replacement

Ford 4.6L, 5.4L Cooling device Service and Engine Coolant component Numbers

To properly company the cooling system, girlfriend will need (1) overflow tank cap, (1) thermostat, (1) thermostat housing gasket, (1) top radiator hose, (1) lower radiator hose, 3 come 4 gallons that engine coolant, and also 10 to 15 gallons that distilled water. A focused engine coolant is compelled for the cooling device flush steps outlined herein; a prediluted coolant will NOT work-related with these procedures.

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Model Year(s)

Engine(s)

Ford part Number

Application Notes

Engine Coolant

1997 - 2002

4.6L, 5.4L V-8

Ford environment-friendly engine coolant/antifreeze Motorcraft VC-5

2002 - 2010

4.6L, 5.4L V-8

Ford yellow engine coolant/antifreeze Motorcraft VC-7-B

Radiator Overflow Tank Cap

1997 - 2010

4.6L, 5.4L V-8

Motorcraft RS527

All design years

Thermostat

1997 - 2010

4.6L, 5.4L V-8

Motorcraft RT1234

190° F thermostat

Thermostat housing Gasket

1997 - 2010

4.6L, 5.4L V-8

Motorcraft RG571

All version years

Upper Radiator Hose

1997 - 2003

4.6L V-8

Motorcraft KM3047

N/A

2004 - 2008

4.6L V-8

Motorcraft KM4739

N/A

2009 - 2010

4.6L, 5.4L V-8

Motorcraft KM4992

N/A

1997 - 2003

5.4L V-8

Motorcraft KM3051

N/A

2004 - 2008

5.4L V-8

Ford 4L3Z-8260-DA

N/A

Lower Radiator Hose

1997 - 2003

4.6L V-8

Ford 3L3Z-8286-BA

All journey types

2004 - 2008

4.6L V-8

Motorcraft KM4738

All drive types

2009 - 2010

4.6L, 5.4L V-8

Motorcraft KM4994

All journey types

1997 - 2003

5.4L V-8

Ford F75Z-8286-MA

2 wheel journey models only

1997

5.4L V-8

Ford F75Z-8286-KD

4 wheel drive models only

1998 - 2003

5.4L V-8

Motorcraft KM4744

4 wheel drive models only

2004 - 2008

5.4L V-8

Ford 4L3Z-8286-BC

All journey types

If her engine come from the manufacturing facility with eco-friendly coolant, than you"ll desire to use Ford/Motorcraft eco-friendly antifreeze. Likewise, if your engine originally came from the factory with yellow coolant, you"ll want to use Ford/Motorcraft yellow antifreeze (see component numbers in chart above). Carry out not mix and also match coolant types.

The ide behind a DIY cooling mechanism flush is straightforward - repeatedly drain, refill, and run the cooling system in order to purge every the old engine coolant. On the last refill, we"ll do some rapid math in stimulate to acquire the proportion of antifreeze-to-water correct. Arrangement on spending the better half that a day to flush her cooling system, as regular warm up and cool down durations will it is in required.

The following procedures are based upon the 4.6L and also 5.4L equipped Ford F-150s, but the straightforward strategy can be used universally to nearly any vehicle and any engine. The procedures listed below were performed on a 1997 to 2003 generation F-150; some device sizes and also component locations may show up different 보다 those mentioned.

Upper/Lower Radiator water tap & Thermostat Replacement

Click any thumbnail to view high resolution fullsize photo w/ addition details (where applicable)


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• through the engine cool, drain the radiator right into a an ideal container. Over there is a petcock ~ above the passenger side, bottom corner of the radiator v a little drain hose attached the runs external of the framework rail (if the water tap is missing, download one). Place a huge drain pan in ~ the drainpipe hose, climate loosen the petcock with a 19 mm wrench till coolant begins to drain. Remove the radiator/overflow tank lid for quicker draining, return it will be a slow process.


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• install the brand-new thermostat and also thermostat o-ring, and then reinstall the housing and also power steering fluid tank clip (use anti-seize on every the bolt threads). Salary close attention to the arrangement of the thermostat, it must be collection in the inlet choose the one in the picture at left.

• Clean the top radiator water tap inlet fitting, climate install the brand-new radiator hose in turning back order. Verify that the clamps on every hoses are properly secured.

• install your new radiator/overflow tank cap, then proceed to the flush procedures.


DIY Cooling device Flush Procedures

1) v the radiator drain petcock closed, totally fill the cooling device with distilled water only (do not usage tap water). Begin the engine and allow the van to reach operation temperature. This ensures the the thermostat opens and water is circulated v the entire system.

2) when operating temperature is reached, turn the engine turn off and enable the engine to cool completely. carry out not effort the next step until the engine has cooled - significant injury may occur.

3) v the engine cool, drain the radiator. As necessary, north your drainpipe pan into the north water jugs. This water must be recycle at an proper location as it is thought about hazardous waste.

4) Repeat measures 1 through 3 at least two more times. The more times this process is repeated, the much more thorough the flush. In ours experience, repeating this process much more than 3 times has actually negligible impacts as the antifreeze concentration is relatively low in ~ this point and many of the old coolant has been replaced by clean water.

5) at this stage, the engine should have been flushed a minimum of 3 times and also is, for all intents and also purposes, fully full the pure distilled water. Before proceeding, make certain your drain pan is fully empty as it is vital to measure up the quantity of coolant gotten rid of for the final process.

6) recommendation your owner manual and also find her engine"s cooling mechanism capacity. This truck"s hands-on states that the complete cooling device capacity is in between 5.14 and also 5.4 gallons. You have the right to take an mean value, however we simply assumed the larger capacity (the distinction for our functions is relatively small and also assumed to be negligible in determining the ratio of water-to-antifreeze). A complete capacity of 5.4 gallons way that our engine demands to have actually 2.7 gallons that distilled water to 2.7 gallons the antifreeze concentrate. Therefore, we require to drainpipe 2.7 gallons the water indigenous the system and replace it through 2.7 gallons that antifreeze because that a perfect 50/50 ratio. Prediluted coolants room not compatible v these service procedures.

7) drainpipe the radiator when again via the petcock. As soon as complete, to water the water right into your empty 1 gallon water jugs and use lock to measure up the lot of water drained. At this point, we were able come drain about 2.5 gallons the water from the radiator. Since we have to remove a minimum 2.7 gallons, we pulled the reduced radiator hose. One more 0.5 gallons were drained.

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8) Determine exactly how much distilled water and also antifreeze have to be added. Our system capacity is 5.4 gallons and also we removed ~3.0 gallons of water in our critical drain. Therefore, the system consisted of 2.4 gallons that distilled water at this point. Due to the fact that a 50/50 mixture is desired, we"ll require to add 0.2 gallons the distilled water and 2.7 gallons of antifreeze.

9) fill the device with antifreeze through the radiator/overflow cap, then optimal off the mechanism with distilled water as/if necessary. Always fill v the compelled amount of antifreeze first; this avoids you native inadvertently adding too much water. For us, we added ~ 2.7 gallons that antifreeze and then included distilled water until the level got to the "cold" variety line top top the overflow tank. If for some reason you had actually to include significantly an ext water than calculated in step 8, a mistake was made and also you"ll require to dual check her measurements. It is imperative that the correct amount of antifreeze is added; severe damage may take place in cold weather if the ratio is substantially off. If something doesn"t add up, retrace your steps. If the overfill tank becomes full prior to you room able to include the forced amount, take the truck because that a quick drive to occupational out any air balloon in the system, then proceed filling the cooling system.

10) enable the truck to reach operating temperature, then verify there are no leaks and that the cooling mechanism is filled to the suitable level. If these steps are perform correctly, your calculations must align v the quantity of water/antifreeze included to the cooling system.