1991 1999 ford explorer chilton User Manual

Ranger/Explorer/Mountaineer underhood maintenance component locations for the 4.0L engine
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Ranger/Explorer/Mountaineer chassis lubrication points for two-wheel drive (4x2) models Click to enlarge
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Introduction 37 

Ranger/Explorer/Mountaineer chassis lubrication points for four-wheel drive (4x4) models
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Proper maintenance and tune-up is the key to long and trouble-free vehicle life, and the work can yield its
own rewards. Studies have shown that a properly tuned and maintained vehicle can achieve better gas mileage
than an out-of-tune vehicle. As a conscientious owner and driver, set aside a Saturday morning, say once a
month, to check or replace items which could cause major problems later. Keep...

Important maintenance and tune-up information can be found on the emission label under the
hood
There are also several labels which give safety information ... Click to enlarge
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Introduction 39 

... as well as service tips and belt routing
Air Cleaner (Element)
The air cleaner is a paper element type. The paper cartridge should be replaced every 30,000 miles, under
normal conditions. Under dusty or severe conditions, the filter should be inspected frequently and changed as
necessary.
Check the air filter more often if the vehicle is operated under severe dusty conditions and replace it as
necessary.
REMOVAL & INSTALLATION
The Ranger, Explorer and Mountaineer vehicles used two types of air...

Air cleaner assembly for the 3.0L and 4.0L engine-2.9L engine similar
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REMOVAL & INSTALLATION 41 

Conical type air cleaner assembly for the 4.0L engine-other engines similar
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Loosen the clamp that secures the intake hose assembly to the air cleaner.
1. 
If necessary, unplug the MAF (Mass Air Flow) and/or IAT (Intake Air Temperature) sensor electrical
connector from the air cleaner housing.
2. 
Some air cleaner assemblies will have enough give in the air inlet pipe and sensor wiring harnesses to
allow filter replacement without removing or disconnecting these items.
Disconnect the hose...

If equipped with the square panel type housing, remove the screws or bail clips attaching the air
cleaner cover.
4. 
If equipped with the conical type housing, unfasten the clamp on the air cleaner body.
5. 
... to allow the filter to be removed
Seperate the lid from the housing base.
6. 
Remove the air filter.
7. 
Installation is the reverse of removal. Dont overtighten the hose clamps! A torque of 12-15 inch lbs.
is sufficient.
8. 
Fuel Filter
REMOVAL & INSTALLATION
Clean all dirt and/or grease from...

The fuel filter is mounted to the drivers side frame rail by a bracket, which also acts as a
protective shield
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Inertia switch location Click to enlarge
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44 REMOVAL & INSTALLATION 

Close up of a 
5
/16  in. push connect fitting
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REMOVAL & INSTALLATION 45 

Installing fuel lines with quick-disconnect couplings-these fittings use a metal garter spring
rather than a plastic clip for line retention
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The inline reservoir type fuel filter should last the life of the vehicle under normal driving conditions. If
the filter does need to be replaced, proceed as follows:
CAUTION
If the fuel filter is being serviced with the rear of the vehicle higher than the front, or if the tank is pressurized,
fuel leakage or siphoning from the tank fuel lines could...