yo HESHER,
WELCOME!
This is by Ford in WorkShop Manual
Damaged water thermostat.
Damaged water pump.
Cooling fan inoperative.
Plugged radiator.
NOTE: If engine is hot, allow engine to cool down before proceeding.
Remove radiator cap and check coolant level at radiator coolant recovery reservoir.
Is coolant level OK?
NO REFILL as outlined. REFER to Cooling System, Draining, Filling and Bleeding in the Cleaning and Inspection portion of this section. GO to Pinpoint Test A2.
A2 CHECK FOR VISIBLE LEAKAGE
Engine coolant has an added dye color, that makes the coolant an excellent leak detector.
Check entire cooling system for visible leakage.
Is there visible leakage?
Yes SERVICE as required. RETEST system.
No GO A3.
A3 PRESSURE TEST COOLING SYSTEM
Using Rotunda Radiator/Heater Core Pressure Tester 021-00013 or equivalent, pressurize cooling system as outlined in Pressure Test under Component Tests in this section.
NOTE: Check inside vehicle for possible heater core leakage.
Is there leakage?
Yes SERVICE as required.
No GO to A4.
A4 CHECK RADIATOR CAP
Using Rotunda Radiator/Heater Core Pressure Tester 021-00013 or equivalent, test pressure relief radiator cap. Refer to Radiator Cap Pressure Test in Component Tests in this section.
Miesk5 Note, Pressure Tester is avail at AZ LOAN-A-TOOL® PROGRAM & other parts store. It will test cap as well.
Did radiator cap test OK?
Yes GO to A5.
No REPLACE damaged pressure relief cap. RETEST system.
A5 CHECK RADIATOR OVERFLOW HOSE
Remove radiator overflow hose.
Inspect radiator overflow hose for obstruction, cracks or cuts.
Is radiator overflow hose condition OK?
Yes GO to A6.
No SERVICE hose as required.
A6 CHECK RESERVOIR
Replenish coolant to Cold level.
Inspect radiator coolant recovery reservoir for leaks.
Is there leakage at radiator coolant recovery reservoir?
Yes REPLACE coolant recovery reservoir. RESTORE vehicle.
No GO to A7.
A7 CHECK COOLANT FOR INTERNAL LEAKAGE
Visually inspect coolant in radiator coolant recovery reservoir for signs of transmission or engine oil.
Is oil evident in coolant?
Yes If engine oil is evident on vehicles with an engine oil cooler, REMOVE engine oil cooler and INSPECT for damage. REPLACE if damaged.
If engine oil is evident on vehicles without engine oil cooler or if oil cooler checks out OK, REMOVE cylinder head as outlined in Section 03-01A, Section 03-01B, Section 03-01C, or Section 03-01D, depending on engine, and INSPECT for leaking head gasket and head or block cracks.
If transmission oil is evident, replace transmission oil cooler in radiator as outlined in this section and check condition of transmission oil as outlined in this section.
No GO to A8.
A8 CHECK ENGINE AND TRANSMISSION FOR COOLANT
Remove oil level indicator for engine and transmission.
Carefully inspect oil level indicator for evidence of coolant.
Is coolant evident?
Yes If coolant is in engine oil on vehicles with an engine oil cooler, REMOVE engine oil cooler and INSPECT for damage. REPLACE if damaged.
If coolant is evident in engine oil on vehicles without oil cooler or if oil cooler checks out OK, REMOVE cylinder head as outlined in Section 03-01A, Section 03-01B, Section 03-01C, or Section 03-01D, depending on engine, and INSPECT for leaking head gasket and head or block cracks.
If coolant is evident in transmission oil, REFER to transmission oil coolant check in Section 07-01A, Section 07-01B, Section 07-01C or Section 03
No Cooling system is OK.
Check coolant for contaminants such as rust or corrosion. Also, check for color discoloration.
Visually inspect A/C condenser core and radiator for obstructions, such as leaves or bugs.
CHECK WATER THERMOSTAT OPERATION
Allow engine to run for 10 minutes.
Feel the inlet and outlet heater water hose and the underside of the upper radiator hose
Are the upper radiator hose and heater water hoses cold?
Yes REPLACE water thermostat. REFER to Thermostat, Water in the Removal and Installation portion of this section. RETEST system.
No LEAVE engine RUNNING. GO to B5.
B5 CHECK COOLING FAN
Check for proper cooling fan clutch operation. Perform Fan Clutch Test. Refer to Component Tests in this section.
Did cooling fan clutch operate OK?
Yes CHECK the following:
Rust or scale in radiator
Water pump shaft and impeller
Collapsed lower hose
No REPLACE fan clutch. REFER to Cooling Fan Blade and Fan Clutch in the Removal and Installation portion of this section. RETEST system.
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My 96's plastic side seams have leaked; mostly ovenight &/or during eng cool-down
I use baby powder; sprinkle usual suxpect areas and see if it shows the origin/ trail - tuff to do on running engine... I heat it up until norm op temp, then shut it down, clean off any wet spots and then sprinkle and start while fan isn't on
Jeff at the
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