wiring FORD SIERRA 1992 2.G Routine Manintenance And Servicing Workshop Manual

3Slacken the drain plug about half a turn.
Position the draining container under the drain
plug, then remove the plug completely. If
possible, try to keep the plug pressed into the
sump while unscrewing it by hand the last
couple of turns. As the plug releases from the
threads, move it away sharply so the stream
of oil issuing from the sump runs into the
container, not up your sleeve! Recover the
sealing washer from the drain plug.
4Allow some time for the old oil to drain,
noting that it may be necessary to reposition
the container as the oil flow slows to a trickle.
5After all the oil has drained, wipe off the
drain plug with a clean rag. Check the sealing
washer for condition, and renew it if
necessary. Clean the area around the drain
plug opening, and refit the plug. Tighten the
plug to the specified torque.
6Move the container into position under the
oil filter.
7Using an oil filter removal tool if necessary,
slacken the filter initially, then unscrew it by
hand the rest of the way (see illustration).
Empty the oil from the old filter into the
container, and discard the filter.
8Use a clean rag to remove all oil, dirt and
sludge from the filter sealing area on the
engine. Check the old filter to make sure that
the rubber sealing ring hasn’t stuck to the
engine. If it has, carefully remove it.
9Apply a light coating of clean engine oil to
the sealing ring on the new filter, then screw it
into position on the engine. Tighten the filter
firmly by hand only - do notuse any tools.
Wipe clean the filter and sump drain plug.10Remove the old oil and all tools from
under the car, then lower the car to the
ground (if applicable).
11Remove the oil filler cap and withdraw the
dipstick. Fill the engine, using the correct
grade and type of oil (see “Lubricants and
fluids”). An oil can spout or funnel may help to
reduce spillage. Pour in half the specified
quantity of oil first, then wait a few minutes for
the oil to fall to the sump. Continue adding oil
a small quantity at a time until the level is up to
the lower mark on the dipstick. Finally, bring
the level up to the upper mark on the dipstick.
Insert the dipstick, and refit the filler cap.
12Start the engine and run it for a few
minutes; check for leaks around the oil filter
seal and the sump drain plug. Note that there
may be a delay of a few seconds before the oil
pressure warning light goes out when the
engine is first started, as the oil circulates
through the engine oil galleries and the new oil
filter, before the pressure builds up.
13Switch off the engine, and wait a few
minutes for the oil to settle in the sump once
more. With the new oil circulated and the filter
completely full, recheck the level on the
dipstick, and add more oil as necessary.
14Dispose of the used engine oil safely, with
reference to “General repair procedures”in
the Reference section of this manual.
1Firmly apply the handbrake, then jack up
the front and rear of the car and support it
securely on axle stands (see “Jacking and
vehicle support”).
2For a quick check, the front brake disc pads
can be inspected without removing the front
wheels by inserting a mirror between each
caliper and roadwheel(see illustration).If any
one pad is worn down to the minimum
specified thickness, all four pads (on both
front wheels) must be renewed.
3It is necessary to remove the rear wheels in
order to inspect the rear disc pads. The pads
can be viewed through the top of the caliper
after removing the blanking spring clip(see
illustration).If any one pad is worn down to
the minimum specified, all four pads (on both
rear wheels) must be renewed.4For a comprehensive check, the brake disc
pads should be removed and cleaned. The
operation of the caliper can then also be
checked, and the condition of the brake discs
can be fully examined on both sides. Refer to
Chapter 10 for further information.
5On rear drum brake models, the brake shoe
friction material can be inspected for wear
without removing the roadwheels. Working
beneath the vehicle, prise the plug from the
brake backplate, and using an inspection
lamp or torch, check that the friction material
thickness is not less than the minimum given
in the Specifications(see illustration).If any
one of the shoes has worn below the
specified limit, the shoes must be renewed as
an axle set (4 shoes).
6At the same interval, check the function of the
brake fluid level warning light. Chock the wheels,
release the handbrake and switch on the
ignition. Unscrew and raise the brake fluid
reservoir cap whilst an assistant observes the
warning light: it should come on as the level
sensor is withdrawn from the fluid. Refit the cap.
7On completion, refit the wheels and lower
the car to the ground.
1Visually inspect the engine joint faces,
gaskets and seals for any signs of water or oil
leaks. Pay particular attention to the areas
around the rocker cover, cylinder head, oil
filter and sump joint faces. Bear in mind that
over a period of time some very slight
seepage from these areas is to be expected
but what you are really looking for is any
indication of a serious leak. Should a leak be
found, renew the offending gasket or oil seal
by referring to the appropriate Chapter(s) in
this manual.
2Similarly, check the transmission for oil
leaks, and investigate and rectify and
problems found.
3Check the security and condition of all the
engine related pipes and hoses. Ensure that
all cable-ties or securing clips are in place and
in good condition. Clips which are broken or
missing can lead to chafing of the hoses,
pipes or wiring which could cause more
serious problems in the future.
10Fluid leak check
9Front and rear brake pad/shoe
check
1•10Every 6000 miles or 6 months
8.7 Unscrewing the oil filter
9.3 Disc pads viewed through caliper
inspection hole (roadwheel removed)9.5 Brake shoe inspection hole plug
(arrowed)9.2 Using a mirror to inspect the disc pad
friction material for wear
A Brake disc B Brake disc pads

4Carefully check the condition of all coolant,
fuel, power steering and brake hoses. Renew
any hose which is cracked, swollen or
deteriorated. Cracks will show up better if the
hose is squeezed. Pay close attention to the
hose clips that secure the hoses to the system
components. Hose clips can pinch and
puncture hoses, resulting in leaks. If wire type
hose clips are used, it may be a good idea to
replace them with screw-type clips.
5With the vehicle raised, inspect the fuel
tank and filler neck for punctures, cracks and
other damage. The connection between the
filler neck and tank is especially critical.
Sometimes a rubber filler neck or connecting
hose will leak due to loose retaining clamps or
deteriorated rubber.
6Similarly, inspect all brake hoses and metal
pipes. If any damage or deterioration is
discovered, do not drive the vehicle until the
necessary repair work has been carried out.
Renew any damaged sections of hose or pipe.
7Carefully check all rubber hoses and metal
fuel lines leading away from the petrol tank.
Check for loose connections, deteriorated
hoses, crimped lines and other damage. Pay
particular attention to the vent pipes and
hoses which often loop up around the filler
neck and can become blocked or crimped.
Follow the lines to the front of the vehicle
carefully inspecting them all the way. Renew
damaged sections as necessary.
8From within the engine compartment,
check the security of all fuel hose attachments
and pipe unions, and inspect the fuel hoses
and vacuum hoses for kinks, chafing and
deterioration.
9Where applicable, check the condition of
the oil cooler hoses and pipes.
10Check the condition of all exposed wiring
harnesses.
1Periodically check the belts for fraying or
other damage. If evident, renew the belt.
2If the belts become dirty, wipe them with a
damp cloth using a little detergent only.
3Check the tightness of the anchor bolts and
if they are ever disconnected, make quite sure
that the original sequence of fitting of
washers, bushes and anchor plates is
retained.
With the vehicle raised on a hoist or
supported on axle stands, check the exhaust
system for signs of leaks, corrosion or
damage and check the rubber mountings for
condition and security. Where damage or
corrosion are evident, renew the system
complete or in sections, as applicable, using
the information given in Chapter 4.With the wheels on the ground, slacken each
wheel nut by a quarter turn, then retighten it
immediately to the specified torque.
Remove and clean the oil filler cap of any
sludge build-up using paraffin.
Inspect the vent hose for blockage or
damage. A blocked hose can cause a build-
up of crankcase pressure, which in turn can
cause oil leaks.
Ford VV carburettor
1Ensure that the air cleaner is correctly fitted,
and that all vacuum hoses and pipes are
securely connected and free from restrictions,
then run the engine until it is at normal
operating temperature.
2Stop the engine, and connect a tachometer
and an exhaust gas analyser in accordance
with the manufacturer’s instructions.
3Start the engine and run it at 3000 rpm for
30 seconds, ensuring that all electrical loads
are switched off (headlamps, heater blower
etc), then allow the engine to idle and check
the idle speed and CO content. Note that the
CO reading will initially rise, then fall and finally
stabilise after between 5 and 25 seconds.4If necessary, adjust the idle speed screw to
give the specified idle speed (see
illustration).
5Checking and adjustment should be
completed within 30 seconds of the meter
readings stabilising. If this has not been
possible, repeat paragraphs 3 and 4, ignoring
the reference to starting the engine.
Weber 2V carburettor
Models without stepper motor
6Proceed as described for the Ford VV
carburettor but note the following:
7It is permissible to loosen the air cleaner
securing screws to allow easier access to the
carburettor adjustment screws but ensure
that all vacuum hoses and pipes are securely
connected. For adjustment screw location
(see illustrations).
Models with stepper motor (ESC II
system)
8The idle speed is controlled by the ESC II
module via the stepper motor. The only idle
speed adjustment possible is provided by the
“idle speed adjustment” wire, which can be
earthed to raise the idle speed by 75 rpm. No
other method of idle speed adjustment should
be attempted. If the idle speed is incorrect,
the problem should be referred to a Ford
dealer, as the problem probably lies in the
ESC II module for which special diagnostic
equipment is required.
15Engine idle speed check
14Oil filler cap check
13Roadwheel security check
12Exhaust system check
11Seat belt check
Every 6000 miles or 6 months 1•11
1
15.7b Weber 2V carburettor adjustment
screw locations - 1.6 litre models
A Idle mixture screwB Idle speed screw
15.7a Weber 2V carburettor adjustment
screw locations - 2.0 litre models up to 1985
A Idle speed screwB Idle mixture screw
15.4 Ford VV carburettor adjustment screw
locations
A Idle speed screwB Idle mixture screw
Caution: Refer to the
precautions in Section 1,
Chapter 4, Part A or B (as
applicable), before proceeding.
Before carrying out any carburettor
adjustments, ensure that the ignition
timing and spark plug gaps are set as
specified. To carry out the adjustments an
accurate tachometer and an exhaust gas
analyser (CO meter) will be required.

CVH carburettor models
7To test the unit the engine must initially be
cold. Disconnect the hot air inlet hose from
the air cleaner spout and observe the position
of the flap which should be fully open to allow
only hot air to enter (see illustration).
8Refit the hose and warm up the engine to
normal operating temperature.
9Disconnect the hot air inlet hose again, and
observe the position of the flap which should
be fully closed to admit only cold air.
10If the flap positions are not as described,
the waxstat is defective and the complete air
cleaner must be renewed as the waxstat is
not available separately.
11On completion of the checks, stop the
engine and reconnect the hot air inlet hose.1The pulse-air filter is located at the front
left-hand side of the engine compartment.
2To renew the element, simply unclip the
filter cover, then lift out the metal gauze, and
withdraw the filter element (see illustration).
3Refitting is a reversal of removal. Ensure
that the holes in the gauze and the filter
element are positioned on the engine side of
the filter housing.
Carburettor models
1Remove the screws from the top of the air
cleaner cover (see illustration).
2Where applicable release the spring clips
around the edge of the cover, then lift or prise
off the cover (see illustration).
3Lift out the air cleaner element. Wipe the
inside of the air cleaner body clean, taking
care not to allow dirt to enter the carburettor
throat. Also clean the inside of the cover.
4Place a new element in position, then refit
the air cleaner cover.
Fuel-injection models
All models except 2.0 litre DOHC
5Disconnect the battery negative lead.
6Depress the locking clip on the airflow
meter wiring plug and disconnect the plug.
Pull on the plug, not the wiring (see
illustration).
7Loosen the securing clip and disconnect
the air inlet hose from the airflow meter.
8Release the four securing clips and lift off
the air cleaner lid with the airflow meter.
9Lift out the old air cleaner element (see
illustration), then wipe the inside of the air
cleaner casing and lid clean.
10Fit the new element with the sealing lip
uppermost.
11Refit the air cleaner lid and secure with
the four clips.
12Reconnect the air inlet hose to the airflow
meter, ensuring that the securing clip is
correctly aligned (see illustration). Reconnect
the wiring plug.
38Air cleaner element renewal
37Pulse air filter element
renewal (1.6 litre CVH)
Every 24 000 miles or 2 years 1•19
1
37.2 Withdrawing the pulse-air filter
element and gauze - 1.6 litre CVH models
38.12 Air intake hose clip correctly aligned38.9 Unclip the lid and remove the air
cleaner element38.6 Disconnecting the airflow meter
wiring plug
38.2 . . . release the spring clips, and lift off
the cover for access to the element38.1 Remove the air cleaner cover
screws . . .
36.7 Air cleaner flap valve operation - CVH models
A Flap fully open to admit hot air
B Flap fully closed to admit cold air
1 Air inlet spout
2 Hot air inlet hose3 Flap valve
4 Link arm
5 Waxstat
6 Air cleaner body

13Reconnect the battery negative lead.
2.0 litre DOHC models
14Disconnect the battery negative lead.
15Disconnect the wiring plug from the idle
speed control valve at the front of the plenum
chamber.
16Loosen the clamp, and detach the air inlet
hose from the air inlet tubing.
17Unscrew the securing nut, and release the
air inlet tube from the bracket on the engine
compartment front panel (see illustration).
18Release the air cleaner lid securing clips,
then lift away the air inlet tube, plenum
chamber and air cleaner lid as an assembly,
disconnecting the breather hose from the air
inlet tube.
19Lift out the air cleaner element (see
illustration), then wipe the inside of the air
cleaner lid and casing clean.
20Fit the new element with the sealing lip
uppermost.
21Further refitting is a reversal of removal.
1Before disturbing any part of the ignition
system, disconnect the battery negative lead.
2Identify and clearly mark all HT leads before
disconnecting them from the spark plugs.
3Refer to the appropriate Section in Chapter
5 and, where applicable, remove the
distributor cap and rotor arm.
4Clean the HT leads and distributor cap with
a dry cloth. Scrape any corrosion or otherdeposits from the connectors and terminals.
Also clean the coil tower.
5Renew the HT leads if they are cracked,
burnt or otherwise damaged. If a multi-meter
is available, measure the resistance of the
leads. The desired value is given in the
Specifications of Chapter 5.
6Renew the distributor cap if it is cracked or
badly burnt inside, or if there is evidence of
“tracking” (black lines marking the path of HT
leakage). If there is a carbon brush at the
centre of the cap, make sure that it moves
freely, and is not excessively worn (see
illustration).
7Clean the metal track of the rotor arm with
fine abrasive paper. Renew the arm if it is
cracked or badly burnt.
8Refit the rotor arm and distributor cap.
9Reconnect the HT leads to the spark plugs
and coil.
10Reconnect the battery and run the engine.
Note: A brake band torque wrench - Ford tool
No 17-005, or a conventional torque wrench
and a splined socket of suitable size to fit the
square section head of the adjuster screw(s)
will be required for this operation.
1For improved access, apply the handbrake,
then jack up the front of the vehicle and
support on axle stands (see “Jacking and
vehicle support”).2The brake band adjuster screw(s) is/are
situated on the left-hand side of the
transmission housing, forward of the
kickdown lever. Note that the C3 type
transmission has a single adjuster screw for
adjustment of the front brake band, whereas
the A4LD type transmission has two adjuster
screws for adjustment of the front and
intermediate brake bands(see illustration).
3Disconnect the kickdown cable from the
kickdown lever on the transmission housing.
4Loosen the locknut on the front brake band
adjuster screw, and back off the adjuster
screw several turns.
5Using the Ford special tool or a suitable
equivalent, tighten the adjuster screw to the
specified torque, then back off the screw two
complete turns, and tighten the locknut.
Ensure that the adjuster screw does not turn
as the locknut is tightened.
6Repeat the procedure given in paragraphs
4 and 5 for the remaining adjuster screw on
A4LD type transmissions, but on all models
where the part number on the transmission
identification tag starts with “88”(see
illustration)and additionally on all 1.8 CVH
engine models, the adjuster screw should be
backed off two and a half turns after
tightening to the specified torque. On all other
models, the adjuster screw should be backed
off two turns.
7Reconnect the kickdown cable, and lower
the vehicle to the ground on completion.
2.0 litre SOHC fuel injection
models
1The fuel filter is located on the left-hand
side of the engine compartment(see
illustration).
2Disconnect the battery negative lead.
3Position a suitable container beneath the
filter, then slowly loosen the fuel inlet union to
relieve the pressure in the fuel lines.
4Disconnect the fuel inlet and outlet unions.
Be prepared for petrol spillage. If necessary,
identify the fuel line unions for use when
refitting.
5Loosen the filter clamp screw, and
withdraw the filter from the clamp. Drain the
petrol from the filter into the container.
Dispose of the filter carefully.
41Fuel filter renewal
40Automatic transmission
brake band adjustment
39Ignition system component
check
1•20Every 24 000 miles or 2 years
38.17 Air intake tube securing nut
(arrowed)
39.6 Bosch distributor cap showing HT
segments (A) and carbon brush (B)40.6 Transmission identification tag with
part number starting with “88”
40.2 Brake band adjustment - A4LD type
transmission
A Adjuster screws
B LocknutsC Kickdown lever
38.19 Lifting out the air cleaner element
Caution: Refer to the
precautions in Chapter 4, Part
B, Section 1 before proceeding.