Engine/Cooling System - Overheating
84ford15Article No. 84-9-9
OVERHEATING (2.4L DIESEL) - COOLING SYSTEM LOW INITIAL FILL
LINCOLN-MERCURY 1984 CONTINENTAL, MARK VII
Overheating condition may occur on some vehicles built before 4/13/84 due to a low coolant level. This condition could be the result of the expansion tank to radiator hose being misrouted behind the air-conditioning cutout switch bracket causing a pinched hose at the dash panel.
The expansion tank used in this system is not the same as the coolant recovery tank used on some other vehicles because it is pressurized like the rest of the system. Excessive cooling system pressure is vented from the expansion tank through a tube to atmosphere.
FIGURE 8:
Inspect for correct hose routing at the air conditioning cutout switch (Figure 8). If the hose is found misrouted, loosen the air conditioning cutout switch bracket attaching nut at the dashpanel and reposition the hose below and clear of the switch. Fill procedures should be performed to ensure complete system fill as described below.
1. Fill the expansion tank with coolant to the indicated level.
2. Start the engine and turn on the heater.
3. Maintain the coolant level in the expansion tank. Install the expansion tank fill cap snugly to seat the cap seal, then tighten the cap an additional 10~ rotation.
4. Run engine at operating temperature until it will not take any more coolant, then take the vehicle for a test drive.
5. Verify that the coolant level in the expansion tank is correct using the markings on the bottle.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP8075A84
TIME: 0.2 Hr. DLR. CODING: Basic Part No. 8075 Code: 43