Volvo 240 1989 User manual

Service Manual
Faulttracing Design
Repairs Function
Maintenance
TP 31361/1; 12.88
Se ctio n 2 (2 3)
lH- J etr on ic 2.4
fuel sy stem
E
ngine B 230 F
240 1989-19
..

This manual covers the following:
B 230 F
Gasoline engine wi th fuel injection and catalyt ic con-
erter system.
2.3 titer cylinder volume.
Two valves per cylinder.
LH 2.4 fuel system
To identify the system with certainty, look for the
following item (see illustration):
--
"
Diagnostic socket

Contents
Fuel system LH2.4 - 240
Contents Page
Specifications.. .. ,.,...... .. . ....... 2
Special
tools ..... .. .. ..
. .. 5
Design and function
-System overview ........... .,. ........ .. ~ , ............,..............., ....
... 6
-Control unit ...... ,.... .. .. ...... .. _.... .............. .. , .... .. .... .. 8
-Sensors ......................................................., ............ .. ............ .. ........... 11
-Catalytic converter, pressure regulator.... .........
.. ............ .... ......... .. ... .. .... .. ......... .13
-Injectors, coldlstart valve, fuel pumps. .......... ... ............. ................ .. ...... _.. .. ... ... 14
-Fuel filter, idle valve. .... .. .. .... .. ........_. ......... .. ._ .. .. ...... . ..... .. 15
-System relay, fuses
.. ........ ~ .... . ........._.... ....... .. ..... .......... ... .. ........._..... .. ... 16
- EVAP system....... _. ..... .. ..... . ..... ._ ...... , _ . ... _ ... .. .. .. .......... . . .. 16
-Diagnostic system...... .............. .. ........ __ .............. .. .........._ .. . ............................ 17
Fault tracing, repairs, maintenance
Detailed table of contents ..................
,.18
Wiring diagrams ................. ............ .......... _ .... ..
.. ..... 54
li he first section of this manual covers the Design and
Function of the fuel system, Reading it will provide
the necessary background for understanding the
second section -Fault tracing, Repairs and Mainte-
nance,
Order No.: TP 31361/1
We reserve the right to make alterations
©VOLVO NORTH AMERfCA CORPORATION

Specifications
Fuel system LH2.4 -240
Specifications
Gasoline, unleaded
Octane requirements:
-RON (Researct1 Octane Number)
91 -95
-AKI Rt M ................................87
2
Air mass meter
Volvo PIN
.. 3517020
Bosch PIN.
.. ................. 0280212016
Resistance between connectors
2 and 3
... . .. ..................... 25-4 .0 n
Throttle switch
Volvo PIN .. .................................... 3517068-7
Bosch
PIN .... ....... .. . .. ..........0 2 80120 325
Con lr ol unit (part numbers)
Wilh EGR (California)
Volvo PIN ..................
.. .. ... 3501687-2
Bosch
PIN . ........... ..
.. ... 0 280 000 556
Without EGR (remainder of USA, Europe):
Volvo PIN ............................... .... 3517407-7
Bosch
PIN ........... ....................... 0 280 000 561
0 280 160 ...
Fuel pressure regulator
VolV OPIN ................. .............. .... 3517064-6
Bosch PIN ..................................... 0 280 160 294
Syslem p ressur e (fuel pressure above intake
manifold pressure):
.. .............300 kPa (42 psi)

Specifications
Fuel svstem LH2.4 - 240
t
o 280 150
Injectors
-Volvo PIN ......... .. ....... .. . .
.... 3517572-8
-
Bos ch PIN................... .....
0280150762
Injeclion capacity 214 cm'lmin at 300 kPa (42 psi)
system pressure.
(Note: use
on ly spedal equipment to test disas-
sembled injector)
Cold start valve Icertain models)
Volvo PIN ....................................... 3517130-5
Bosch PIN...............
.. ........... ... 0 280 1 70 264
Injection capa
ci ty around 165 cmJ /min.
~
0580464
Fuel pump
Volvo PIN .......... . .. .. ......... .... .... 1389449-8
Bosch
PIN ...............0 580 464 039
Pumpcapacityal 300 kPa (42 psi) and +20°C ( 68
e
F) :
-12 V .....
.. . .. .. .. .............. .. .. .... 130 liters/hour
1.0 litersl
30 sec
-
11 V ....
.. .. 108 liters/hour
0.8litersl30 sec
-
10 V .. ... .. ....... .. .. .......65 Utersthour
0.6 lilers/30 sec
Current consumption at 300 kPa (42 psi). +20·C
(68 ° F) and 12 V
-ma
xi mum .. ....... ........... .. .. ........... 6.5 amp
Safety screen
Fuel
filter
Volvo PIN .. .. ................ 1389450-6
Filters particles down
to min. of: ... 0.002 IRll
Tightening torque .... .. ......20-35 Nm (15-25 n.I !»
Tank p
ump
Volvo PIN .. ........................ ...... .. . .. 1389721-0
(1317671)
Current consumption .....................
3- 4 amp
3