1991 1999 ford explorer chilton User Manual

Disconnect the electrical connector from the inertia switch
1. 
Crank the engine for about 15-30 seconds or, if the vehicle starts, until it runs out of fuel.
2. 
Raise and support the vehicle safely.
2. 
Remove the fuel filter mounting bracket retaining nuts ...
... then loosen the filter retaining clamp and slide the bracket assembly back ... HOW TO USE THIS BOOK
REMOVAL & INSTALLATION 47 

... to provide better access to the push connect fittings (arrows)
With a rag positioned to catch any spilled fuel, dis-engage the retainer clip and remove the line Detach the fuel lines from both ends of the fuel filter by disengaging both push connect fittings.
Install new retainer clips in each push connect fitting.
3. 
Note which way the flowdirection arrow points on the old filter.
4. 
Remove the filter from the bracket by loosening the filter retaining clamp enough to allow the filter to
pass...

Typical PCV system operation
Click to enlarge
Check the PCV valve frequently to see if it is free and not gummed up, stuck or blocked. To check the valve,
remove it from the engine and shake it. It should rattle. It is possible to clean the PCV valve by soaking it in a
solvent and blowing it out with compressed air. This can restore the valve to some level of operating order.
This should be used only in emergency situations. Otherwise, the valve should be replaced at least once a
year. Always check PCV...

Evaporative canister mounting
Click to enlarge
The fuel evaporative emission control canister should be inspected for damage or leaks at the hose fittings.
Repair or replace any old or cracked hoses. Replace the canister if it is damaged in any way. The canister is
located on the left side radiator support, under the hood.
SERVICING
Ford has designed and tested the evaporative emission components to exceed 120,000 mi. (193,116km) or 10
years of vehicle use. No maintenance or service should be required,...

Do not smoke or all open flames/sparks near a battery; the gases contained in the battery are very explosive
and, if ignited, could cause severe injury or death.
All batteries, regardless of type, should be carefully secured by a battery hold-down device. If not, the
terminals or casing may crack from stress during vehicle operation. A battery which is not secured may allow
acid to leak, making it discharge faster. The acid can also eat away at components under the hood.
Always inspect the battery case...

Maintenance-free batteries usually contain a built-in hydrometer to check fluid level
If the level is low, add only distilled water through the opening until the level is correct. Each cell must be
checked and filled individually. Distilled water should be used, because the chemicals and minerals found in
most drinking water are harmful to the battery and could significantly shorten its life.
If water is added in freezing weather, the vehicle should be driven several miles to allow the water to mix with...

On non-sealed batteries, the fluid level can be checked by removing the cell caps
If the fluid level is low, add only distilled water until the level is correctCheck the specific gravity of the batterys electrolyte with a hydrometer HOW TO USE THIS BOOK
BATTERY FLUID 53 

CAUTION
Battery electrolyte contains sulfuric acid. If you should splash any on your skin or in your eyes, flush the
affected area with plenty of clear water. If it lands in your eyes, get medical help immediately.
The fluid (sulfuric acid solution) contained in the battery cells will tell you many things about the condition of
the battery. Because the cell plates must be kept submerged below the fluid level in order to operate, the fluid
level is extremely important. And, because the specific gravity of...

A special tool is available to pull the clamp from the post
The underside of this special battery tool has a wire brush to clean post terminals HOW TO USE THIS BOOK
CABLES 55 

Place the tool over the battery posts and twist to clean until the metal is shiny
The cable ends should be cleaned as wellHOW TO USE THIS BOOK
56 CABLES