1991 1999 ford explorer chilton User Manual

Checking the resistance of a coolant temperature sensor with an ohmmeter. Reading is 1.04
kilohms
Spark plug wires can be checked for excessive resistance using an ohmmeter WARNING
HOW TO USE THIS BOOK
662 RESISTANCE 

Never use an ohmmeter with power applied to the circuit. The ohmmeter is designed to operate on its own
power supply. The normal 12 volt electrical system voltage could damage the meter!
Isolate the circuit from the vehicles power source.
1. 
Ensure that the ignition key is OFFwhen disconnecting any components or the battery.
2. 
Where necessary, also isolate at least one side of the circuit to be checked, in order to avoid reading
parallel resistances. Parallel circuit resistances will always give a...

BATTERY CABLES
When working on any electrical component on the vehicle, it is always a good idea to disconnect the negative
(-) battery cable. This will prevent potential damage to many sensitive electrical components such as the
Powertrain Control Module (PCM), radio, alternator, etc.
Any time you disengage the battery cables, it is recommended that you disconnect the negative (-)
battery cable first. This will prevent your accidentally grounding the positive (+) terminal to the body of
the vehicle...

AIR BAG (SUPPLEMENTAL RESTRAINT) SYSTEM
The 1995-99 Ranger, Explorer and Mountaineer vehicles are available with an air bag Supplemental Restraint
System (SRS). The SRS is designed to work in conjunction with the standard three-point safety belts to
reduce injury in a head-on collision.
WARNING
The SRS can actually cause physical injury or death if the safety belts are not used, or if the manufacturers
warnings are not followed. The manufacturers warnings can be found in your owners manual, or, in some...

death.
SERVICE PRECAUTIONS
Whenever working around, or on, the air bag supplemental restraint system, ALWAYS adhere to the
following warnings and cautions.
Always wear safety glasses when servicing an air bag vehicle and when handling an air bag module.
· 
Carry a live air bag module with the bag and trim cover facing away from your body, so that an
accidental deployment of the air bag will have a small chance of personal injury.
· 
Place an air bag module on a table or other flat surface with the bag...

HEATING AND AIR CONDITIONING
Blower Motor
REMOVAL & INSTALLATION
Exploded view of the blower motor mountingClick to enlarge
Exploded view of the blower motor and wheel (fan) assembly Click to enlarge
Without Air Conditioning Disconnect the negative battery cable.
1. 
Remove the air cleaner or air inlet duct, as necessary.
2. 
HEATING AND AIR CONDITIONING 669 

If necessary, Remove the speed control module and the washer fluid reservoir.
3. 
To remove the blower motor, first disconnect the electrical wire harness plug ...... then remove the blower motor cooling tube from the motor
Disconnect the wire harness connector from the blower motor by pushing down on the connector tabs
and pulling the connector off of the motor.
4. 
Disconnect the blower motor cooling tube at the blower motor.
5.  HOW TO USE THIS BOOK
670 REMOVAL & INSTALLATION 

Remove the blower motor attaching screws and the washer fluid reservoir ...
... then slide the blower motor from the housing. Take care to not damage the blower wheel (arrow)
Remove the 2 screws attaching the blower motor and wheel to the heater blower assembly.
6. 
Holding the cooling tube aside, pull the blower motor and wheel from the heater blower assembly and
remove it from the vehicle.
7. 
Remove the blower wheel push-nut and/or clamp from the motor shaft and pull the blower wheel
from the motor...

Install a new motor mounting seal on the blower housing before installing the blower motor.
9. 
Position the blower motor and wheel assembly in the blower housing and install the attaching screws.
10. 
Connect the blower motor cooling tube.
11. 
Connect the electrical wire harness hard shell connector to the blower motor by pushing into place.
12. 
If removed, position the solenoid box cover into place and install the 2 retaining screws.
13. 
Install the air cleaner or air inlet duct, as necessary.
14....

Exploded view of the 1991-94 heater core assembly
Click to enlarge
Disconnect the negative battery cable. Allow the engine to cool down. Drain the cooling system to a
level below the heater core fittings on the firewall.
1. 
CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and
are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove
fatal in sufficient quantity. Always drain the...