check engine VOLVO 240 1990 Owner's Guide

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
filter. Exhaust-emission control accomplished by fuel injection, Lambda-\
sond system and catalytic
converter.
Output (SAE J1349) 114 hp at 5400 rpm (85 kW at 90 rps)
Max. torque (SAE J1349) 136 ft. lbs. (185 Nm) at 2700 rpm
Number of cylinders 4
Bore 3.78" (96 mm)
Stroke 3.15" (80 mm)
Displacement 2.32 liters (141 cu. in.)
Compression ratio 9.8:1
Valve clearance, cold engine
inlet and exhaust Checking:
0.012-0.016"
(0.30-0.40 mm) Adjusting:
0.014-0.016"
(0.35-0.40 mm)
Valve clearance, warm
engine
inlet and exhaust 0.014-0.018"
(0.35-0.45 mm)
0.016-0.018"
(0.40-0.45 mm)

All specifications are subject to change without notice. pg. 100 Specifications
Engine B230F

Cooling System
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Volvo 1990 240 Model

Oil level between dipstick marks. The distance between the marks represe\
nts approx. 1 US qt. = 1 liter.
Fill with multigrade oil

Check without removing the cap that the brake fluid level is above the M\
in-mark. Brake and clutch fluid
DOT 4.

Coolant level between the expansion tank marks. Mixture: 50 percent anti\
-freeze and 50 percent water.

Washer fluid reservoir should be filled with water and solvent (wintert\
ime: windshield washer anti-
freeze).

Electrolyte level 1/4" - 3/8" (5 - 10 mm) above plates. Fill distilled\
water only, never acid. Check level
in conjunction with normal service or once a year.
Never operate engine in closed unventilated areas.

Changing a wheel, see pages 84, 85
a bulb, see pages 76-80
a fuse, see page 81

Fuel: Octane rating 95 RON Unleaded, 91 (R+M)/2
Min. 91 RON Unleaded, 87 (R+M)/2 Inside back cover
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