Ford Ranger EV (2001 year). Manual — part 58

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303-03-10

Engine Cooling

GENERAL PROCEDURES

Cooling System Drain, Fill and Bleed

Drain — Cooling System

1. Disconnect the auxiliary battery ground cable.

2.

WARNING: Do not remove the

radiator pressure relief cap if the coolant is
hot or if the coolant pump is running.
Remove the radiator pressure relief cap.

3. Raise and support the vehicle. Refer to

Section

100-02

.

4. Position a catch pan under the radiator drain

cock.

5. NOTE: This procedure will drain all coolant

from the radiator, however, approximately 3.1 l
(3.3 qt) of coolant will remain in the modules
and coolant lines.
Open the radiator drain cock and drain the
coolant from the radiator.

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Engine Cooling

GENERAL PROCEDURES (Continued)

Fill — Cooling System

1. Close the radiator drain cock.

2. Lower the vehicle.

3. Add a 50/50 mix of Premium Cooling System

Fluid E2FZ-19549-AA or equivalent meeting
Ford specification ESE-M97B44-A and distilled
water to the radiator until the coolant level
reaches the bottom of the radiator filler neck.

4. Fill the coolant reservoir with the 50/50 coolant

mix until the coolant level reaches the cold fill
line.

5. Turn the ignition key to the ON position to

activate the coolant pump.

6. Add the 50/50 coolant mix to the radiator until

the coolant level reaches the bottom of the
radiator filler neck.

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Engine Cooling

GENERAL PROCEDURES (Continued)

7. Alternately squeeze and hold the coolant hoses

to the direct current/direct current (DC/DC)
module and the hoses connecting to the
underbody metal coolant tubes to make sure
that coolant is flowing through all of the
system.

8. Add the 50/50 coolant mix to the radiator until

the coolant level reaches the bottom of the
radiator filler neck.

9. Install the radiator pressure relief cap.

10. Turn the key to the OFF position to deactivate

the coolant pump.

11. Slowly turn the pressure relief cap

counterclockwise to the first stop, then retighten
the cap. This forms a fluid link between the
radiator and the overflow tank.

Bleed — Cooling System

1. Fill the coolant reservoir with a 50/50 mix of

coolant meeting Ford specification
ESE-M97B44-A and distilled water to the cold
mark.

2. Remove the radiator pressure relief cap.

3. Turn the ignition key to the ON position to

activate the water pump.

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Engine Cooling

GENERAL PROCEDURES (Continued)

4. Add the 50/50 coolant mix to the radiator until

the coolant level reaches the bottom of the
radiator filler neck.

5. Install the radiator pressure relief cap.

6. Turn the key to the OFF position to deactivate

the coolant pump.

Purge — Cooling System

1. NOTE: Under certain conditions, an air pocket

can be formed in the coolant system at the
coolant pump inlet. This causes the pump to
stall, producing no coolant flow through the
system. If the condition persists, the electronics
can overheat, which produces an power limit or
shut down conditions.
The solution for this is to bleed the air out of
the highest point of the coolant lines. This line
runs along the top of radio und er the hood of
the vehicle. The hose needs to be cut (which
bleeds the air) between the two hose retainer
clips, and needs to have a 3/4‘‘ hose splice
installed and secured with two hose clamps. If a
splice is already installed, one clamp can be
loosened to slightly open the joint. That action
will release enough air to allow the pump to
prime. After bleeding the hose and securing it
again, the radiator should be filled and the
pump operated for 3-5 minutes, which will
purge the remaining air pockets. This pump can
be activated by turning the ’’ignition‘‘ key to
the on position; (do not enable the vehicle).
After that, install the radiator cap and put the
proper amount of coolant in the overflow
reservoir.
This procedure may be needed after certain
coolant component changes. If the pump is
running and coolant flowing, it is not necessary
to do this procedure.