Ford Electric Ranger 2001 Manual page 234

303-03-13
GENERAL PROCEDURES (Continued)
Engine Cooling
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.
303-03-13
2001 Ranger EV, 01/2001