service FORD BRONCO 1988 Service Manual

276
*
[SV01300( ALL)03/95]
Ford Motor Company recommends that the
Owner Maintenance Checks listed in the
Maintenance Schedule and Recordbooklet be
performed for the proper operation of your
vehicle. In addition to the conditions listed in
theOwner Maintenance Checklist, be alert for any
unusual noise, vibration, or other indication that
your vehicle may need service. If you do notice
something unusual, see that your vehicle is
serviced promptly.
*
[SV01600(BEF )03/95]
Precautions When Servicing Your
Vehicle
*
[SV01700(BEF )01/95]
Be especially careful when inspecting or
servicing your vehicle. Here are some general
precautions for your safety:
*
[SV01900( ALL)03/95]
q
If you must work with the engine running,
avoid wearing loose clothing or jewelry that
could get caught in moving parts. Take
appropriate precautions with long hair.
*
[SV02000(BEF )01/95]
q
Do not work on a vehicle in an enclosed
space with the engine running, unless you are
sure you have enough ventilation.
*
[SV02100(BEF )01/95]
q
Never get under a vehicle while it is
supported by a jack only. If you must work
under a vehicle, use safety stands.
*
[SV02200(BEF )01/95]
q
Keep all lit cigarettes and other smoking
materials away from the battery and all
fuel-related parts.
*
[SV02500( ALL)03/95]
If you disconnect the battery, the engine must
ªrelearnº its idle conditions before your vehicle
will drive properly. To find out how the engine
does this, seeBatteryin this chapter.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

279
*
[SV03600(B F )06/93]
half page art:0020337-E
Hood and support
*
[SV03775(B F )12/89]
NOTE: Be sure to oil the hood latch every six
months to maintain smooth operation.
*
[SV03900(BEF )05/90]
Always attempt to lift the hood after closing to
be sure it is securely latched.
%
*
[SV04500(BEF )04/95]
Engine Compartment
*
[SV04600(BEF )05/94]
Your vehicle has one of the following types of
engines:
*
[SV04750(BEF )05/89]
q
A 5.0 Liter EFI, V-8 engine, or
[SV04800(B )05/89]
q
A 5.8 Liter EFI, V-8 engine.
*
[SV05500(BEF )11/94]
The following pages show diagrams of each
engine type and where to find items that you
should regularly service.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

280
*
[SV05800(B F )04/95]
full page art:0020345-I
5.0L/5.8L engine compartment service points
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

283
*
[SV07025( ALL)05/95]
NOTE: If you replace your fuel cap with an
aftermarket fuel filler cap, the customer
warranty may be void for any damage
to the fuel tank and/or fuel system.
*
[SV07050( ALL)05/95]
RWARNING
If the fuel cap is venting vapor or if you
hear a hissing sound, wait until it stops
before completely removing the cap.
*
[SV07060(BEF )11/89]
A venting fuel tank is not an abnormal
condition. It may be caused by:
*
[SV07061(BEF )03/90]
q
Too volatile a fuel for the weather conditions.
The service stations sometimes sell winter
grade fuel in the summer.
*
[SV07062(BEF )11/89]
q
Pulling a heavy load on hot days, or at high
altitudes.
*
[SV07063(BEF )11/89]
q
Extended periods of idling with the engine
RPM increased above the normal idle range.
*
[SV07064(BEF )11/89]
q
Parking vehicle in full sunlight for extended
periods on extremely hot days.
*
[SV07500( ALL)05/95]
Choosing the Right Fuel
*
[SV07600( ALL)05/95]
Use only UNLEADED FUEL in your vehicle.
Using leaded fuel is prohibited by federal law.
Your warranty may not apply if your vehicle is
damaged because you used the wrong fuel.
*
[SV07700( ALL)05/95]
Vehicle inspection programs may detect
misfueling. Under these circumstances, you may
be required by law to make costly repairs at
your own expense.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

284
*
[SV08710( ALL)04/95]
Octane recommendations
*
[SV08725( ALL)04/95]
Your vehicle is designed to use regular
unleaded fuel with an octane rating of 87.In
most cases, it is not necessary to use a fuel with
an octane rating higher than 87. At service
stations, the octane rating is displayed on a label
on the pumps.
*
[SV08900( ALL)05/95]
one inch art:0060001-C
Typical octane rating label
*
[SV09050( ALL)05/95]
In some parts of the country, ªregularº grade
fuels are sold with octane ratings of 86 or even
less, especially in high altitude areas. We
recommend that you do not use these fuels.
Always use a fuel with an octane rating of 87,
even if it is sold as a ªmidgradeº or ªpremium.º
*
[SV09200( ALL)05/95]
Do not be concerned if your vehicle sometimes
knocks lightly when you drive up a hill or when
you accelerate. However, if a fuel with the
recommended octane rating knocks heavily
under all driving conditions or knocks lightly
driving at cruising speed on level roads, see
your dealer or a qualified service technician.
Persistent, heavy knocking can damage the
engine.
*
[SV09435( ALL)05/95]
Fuel quality
*
[SV09450( ALL)05/95]
If you are experiencing starting, rough idle or
hesitation problems when the engine is cold, it
may be caused by fuel with low volatility. Try a
different brand of fuel. If the condition persists,
see your dealer or a qualified service technician.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

297
*
[SV19100( ALL)03/95]
5. Stand away from the radiator opening. Hot
steam may blow out or hot engine coolant
may even splash out.
*
[SV19500( ALL)01/93]
Freezing Protection
*
[SV19600( ALL)03/91]
The factory-installed solution of Ford Premium
Cooling System Fluid and water will protect
your vehicle tos35ÊF (s37ÊC).Check the freeze
protection rating of the engine coolant at least
once a year, just before winter.
*
[SV19701( ALL)02/95]
Add engine coolant only to the recovery
reservoir.If the coolant level is low, add to the
reservoir a 50/50 mixture of water and the type
of engine coolant that Ford specifies. You may
add water by itself only in an emergency, but
you should replace it with a 50/50 mixture as
soon as possible.
*
[SV19801( ALL)02/95]
Ford Premium Cooling System Fluid is an
optimized formula that will protect all metals
and rubber elastomers used in Ford engines for
four years or 50,000 miles (80,000 km). It is not
necessary and not recommended to use
supplemental coolant additives in your gasoline
powered vehicle. These additives may harm
your engine cooling system. Follow the
recommended service interval for changing your
engine coolant.
*
[SV19851( ALL)04/94]
NOTE: When you change or add engine
coolant, it is important to maintain
your engine coolant concentration
between 40%(-11ÊF [-24ÊC]) and 60%
(-62ÊF [-52ÊC]),depending on your local
climate conditions. Below 40% you will
lose freeze protection and above 60%
your engine may overheat on a warm
day.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

299
*
[SV20151( ALL)01/95]
You may add water by itself only in an
emergency, but you should replace it with a
50/50 or appropriate mixture as soon as
possible.
*
[SV20200( ALL)01/95]
Have your dealer check the engine cooling
system for leaks if you have to add a quart
(liter) of engine coolant more than once a month.
%*
[SV20500( ALL)11/94]
Checking hoses
*
[SV20600( ALL)10/89]
Inspect all engine and heater system hoses for
deterioration, leaks and loose clamps before
adding or replacing engine coolant. Make
whatever repairs or replacements that are
necessary using Motorcraft parts or their
equivalents.
*
[SV20700( ALL)05/95]
Engine coolant drain and flush
*
[SV20800( ALL)10/89]
To drain your vehicle's engine coolant:
*
[SV20900( ALL)03/94]
1. Turn off the engine and let it cool. Fully
depressurize the engine cooling system by
covering the radiator cap with a thick cloth
and turning it slowly counterclockwise to the
first stop. Step back while the pressure
releases.
*
[SV20950( ALL)05/90]
2. Remove the cap.
*
[SV21000(B FM)05/90]
3. Attach a small hose to the drain tube at the
bottom of the radiator.
*
[SV21200( ALL)05/90]
4. Let the engine coolant drain into a suitable
container. Disconnect the lower radiator hose
at the radiator connector and drain any
remaining engine coolant into a container.
*
[SV21225( ALL)05/94]
5. Reconnect the lower radiator hose and close
the radiator drain cock.
*
[SV21250( ALL)10/94]
Proper procedures for flushing the cooling
system can be found in theTruck Service Manual.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

314 [SV33635( ALL)04/95]q
Continuous operation and/or extensive idling
(a delivery service as an example).
[SV33640( ALL)04/95]
q
Operating in severe dust conditions.
[SV33645( ALL)04/95]
NOTE: Use of a transmission fluid other than
specified could result in transmission
malfunction and/or failure. Refer to
ªAdding automatic transmission fluidº,
ªRefill capacitiesº and ªlubricant
specificationsº for further information.
%*
[SV33651( ALL)02/95]
Checking the Automatic Transmission
Fluid
*
[SV33701( ALL)02/95]
It is preferable to check the transmission fluid
level at normal operating temperature
150ÊF-170ÊF (66ÊC-77ÊC),after approximately 20
miles (32 km) of driving. However, if necessary,
you can check the fluid level without having to
drive 20 miles (32 km) to obtain a normal
operating temperature if outside temperatures
are above50ÊF (10ÊC).
*
[SV33801( ALL)01/95]
NOTE: If the vehicle has been operated for an
extended period at high speeds or in
city traffic during hot weather, or
pulling a trailer, the vehicle should be
turned off for about 30 minutes to
allow the fluid to cool before checking.
*
[SV33910( ALL)12/91]
With the vehicle on a level surface, start the
engine and move the transmission shift selector
through all of the gear ranges allowing sufficient
time for each position to engage. Securely latch
the transmission shift selector in the Park (P)
position, fully set the parking brake and leave
the engine running.
*
[SV33920(B F )06/94]
NOTE: Vehicles equipped with the 4x4 option
must have the 4x4 shift selector in any
position other than neutral.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

316
*
[SV34000(B FM)06/92]
quarter page art:0020372-E
Automatic transmission dipstick
[SV34400(B F )01/95]
Manual Transmission and
Transfer Case Fluid
[SV34600(B F )01/95]
Checking the fluid
*
[SV34700(B F )12/91]
Clean the filler plug on the side of the case.
Remove the filler plug. The fluid level should be
up to the bottom of the filler plug hole.
*
[SV34800(B F )03/91]
If additional fluid is required:
[SV34900(B F )01/95]
1. Add enough fluid through the filler plug
hole to bring the level up to the bottom of
the hole. Use only fluid certified to meet
Ford Motor Company lubricant specification
as listed underA Quick Reference for Refill
Capacities and Motorcraft Parts, later in this
section.
*
[SV35000(B F )03/91]
2. Replace the filler plug in its original
position, making sure it is fully seated.
%
*
[SV35100(B F )02/95]
The Clutch
*
[SV35200(B F )03/91]
The clutch on your vehicle is automatically
self-adjusting and should not require any routine
service.
*
[SV35301(B F )03/91]
During normal operation the fluid level in the
clutch reservoir will slowly rise. If for any
reason the fluid level drops, maintain the fluid
level at the step in the reservoir body.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com

339 [SV47750(B )03/91]
eight pica chart:0020791-A
%*
[SV48600( ALL)03/95]
Emission Control System
*
[SV48700(BEF )05/95]
Your vehicle is equipped with a catalytic
converter which enables your vehicle to comply
with applicable exhaust emission requirements.
*
[SV48725(B )05/95]
RWARNING
Exhaust leaks may result in the entry of
harmful and potentially lethal fumes into
the passenger compartment. Under
extreme conditions excessive exhaust
temperatures could damage the fuel
system, the interior floor covering, or
other vehicle components, possibly
causing a fire.
*
[SV48800(BEF )05/95]
To make sure that the catalytic converter and the
other emission control parts continue to work
properly:
*
[SV48900( ALL)01/95]
q
Use only unleaded fuel.
*
[SV49000( ALL)01/95]
q
Avoid running out of fuel.
*
[SV49100( ALL)01/95]
q
Do not turn off the ignition while your
vehicle is moving, especially at high speeds.
*
[SV49200( ALL)03/95]
q
Have the services listed in theMaintenance
Schedule and Recordbooklet performed
according to the specified schedule. The
scheduled maintenance services are required
because they are considered essential to the
life and performance of your vehicle and to
its emissions system.
File:ltsvb.ex
Update:Tue Jun 20 16:56:22 1995
ProCarManuals.com