ignition VOLVO 240 1990 Owner's Manual

Volvo 1990 240 Model
WARNING!
The ignition system operates at very high voltages. Special safety preca\
utions must be followed to
prevent injury:
Always turn the ignition off when:
l connecting engine test and diagnostic equipment to the vehicle (timing \
light, tach-dwell tester,
ignition oscilloscope, etc.).
l Replacing ignition components e.g. plugs, coil, distributor, high-tensio\
n leads, etc.




Contents | Top of Page
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Volvo 1990 240 Model
Warning: Turn starting (ignition) switch OFF before replacing fuses. E\
xcessive heat may be created by
a short circuit. Care must be exercised while replacing blown fuses.

Some of the equipment listed below is optional

Refer to the fuse location chart at fuse box for fuses specific to your \
car.

1 Cigarette lighter, Power mirrors, Radio, Tailgate wiper/washer 8A
2 Windshield wiper/washer, Horn 16A
3 Heater blower 25A
4 Fuel feed (in-tank) pump, Lambda-sond heating element 8A
5 Turn signals, Back-up lights 16A
6 Main fuel pump relay 16A
7 Brake lights 8A
8 Central locking, Interior and glove compartment lights, Trunk and engi\
ne
compartment lights, Radio, Power antenna, Clock, Daytime running lights \
(Canada)* 8A
9 Hazard warning Flashers 8A
10 Power windows 16A
11 Heated rear window, 4th gear (automatic transmission) 16A
12 Air conditioning (with blower control), Power windows (relay),
Heated rear window (relay), Seat belt reminder, Cruise control 8A
13 Heated front seats, Daytime running lights - relay (Canada)* 16A
14 Rear fog lights 8A
15 Parking lights (left side), License plate light 8A
16 Parking lights (right side), Instruments and control panel lights, \
Shift indicator light 8A
Blade type fuse, serving LH-Jetronic fuel injection system. Located on t\
he left
wheel housing by the ignition coil 25A

* Note: Early production Canadian vehicles are not equipped with Daytime\
Running Lights.




Contents | Top of Page
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Volvo 1990 240 Model
dealer.

Condition: Starter fails to operate (or operates very slowly)
Possible cause Correction
Weak battery or dead cell. With the starting (ignition) switch in the "Driving"
or "On" position, check to see if the warning lights
on the dashboard come on and if they stay on when
the starter is engaged. If the lights do not come on or
if they go off when the starter is engaged, the battery
is discharged or see below.
Loose or corroded battery cable terminals. Check battery terminals and clamps. Clean or
replace if necessary. Check that the starter cable is
secure at its terminals.
The ground strap, which connects the battery
negative (-) terminal to the engine, should also be
checked for corrosion or looseness.
Open circuit between starting (ignition) switch
and starting (ignition) switch terminal on
starter. The circuit is closed if a clicking sound is heard
from the starter when it is engaged. If no clicking
sound is heard, check that the blue wire at the starter
is secure. If still no clicking sound is heard, the
starting (ignition) switch or the wire is defective.
Starter motor defective. If the above checks have been performed, and no
fault is evident, the starter may be defective. NOTE:
In this case the headlight intensity will not dim when
the starter is engaged.
pg. 93 Service diagnosis
Condition: Starter motor operates but engine does not start

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Volvo 1990 240 Model
Possible cause Correction
Intake system leaking. Check vacuum hose connections at manifold and
auxiliary air valve.
No fuel reaching engine. Check for fuel in the tank.

Check fuse No 4.
No spark Check that the high tension lead from the coil to the
distributor cap is connected and that the wires to the
distributor and coil are connected.

Check the fuse for the engine control system. The fuse
is located in the engine compartment on the left wheel
housing by the ignition coil.
Spark plugs, high tension leads or distributor
cap wet or defective. Clean the parts with a dry cloth or spray with a moisture
remover. Replace defective or worn parts.

If no fault is found following the above steps, contact
your Volvo dealer.
pg. 94 Service diagnosis
Condition: Erratic idle (misfiring)
Possible cause Correction
Intake system leaking. Check hose connections.
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Volvo 1990 240 Model
Spark plugs, high tension leads or distributor
cap worn (defective) Clean distributor cap and leads, check the cap for
cracks. Replace defective or worn parts.
Worn spark plugs. Remove. Clean or replace spark plugs.
Condition: Engine stalls at irregular intervals
Possible cause Correction
Defective wires. Check wire terminals at: fuel pump, fuse No. 5 and 7, coil, distributor,\
ignition
switch and relays.
Intake system
leaking. Check vacuum hose connections at manifold and auxiliary air valve.
Fuel filter clogged. Clean fuel tank filter and replace line fuel filter.
pg. 95 Service diagnosis
Condition: Excessive fuel consumption
Possible cause Correction
Fuel lines
leaking. Check
tightness.
Spark plugs
worn. Replace plugs.
Condition: Misfiring at highway driving speed

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Volvo 1990 240 Model
pg. 97 Specifications
98Dimensions and weights
98Cargo space
99Engine
100Cooling system
100Fuel system
100Ignition system
101Power transmission
101Front suspension
102Capacities
102Electrical system
pg. 98 Specifications
Dimensions and weights Sedan models Wagon models
Length 189.9" (482 cm) 190.7" (484 cm)
Width 67.3" (171 cm) 67.3" (171 cm)
Height, curb weight 56.3" (143 cm) 57.5" (146 cm)
Wheelbase 104.3" (265 cm) 104.3" (265 cm)
Ground clearance (full load) 4.7" (12 cm) 4.7" (12 cm)
Track, front
rear 56.3" (143 cm)
53.5"(136cm) 56.3" (143 cm)
53.5" (136cm)
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Volvo 1990 240 Model

Type Positive pressure, closed system
Thermostat begins to open at 188.6 ° F
Fan belts, designation HC-38 x 918 (two)

Coolant: Volvo Coolant type C (blue-green)

Fuel system

The engine is equipped with an electronic fuel injection system.

Ignition System

Firing order 1-3-4-2
Ignition setting (12 ° B.T.D.C. at 750 rpm)
Spark plugs Bosch WR7DC (or equivalent)
Spark plug gap 0.028-0.032" (0.7-0.8 mm)
Tightening torque 15-22 ft. lbs. (20-30 Nm)
Distributor, direction of rotation Clockwise pg. 101 Specifications
POWER TRANSMISSION

Manual or automatic transmission. Hypoid type final drive.

Manual transmission M47 II
Reduction ratios:
1st gear 4.03:1
2nd gear 2.16:1
3rd gear 1.37:1 Rear axle reduction ratio:
4th gear 1.00:1 3.31:1
5th gear 0.82:1
Reverse 3.68:1
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