Workshop Repair Manuals

Volvo Workshop Manuals

[PREV PAGE] [NEXT PAGE]

volvo Workshop Repair Guides


940 L4-2.3L SOHC VIN 88 B230F (1992)

Powertrain Management > Computers and Control Systems > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Technical Service Bulletins > Customer Interest for Coolant Temperature Sensor/Switch (For Computer): > 28205906 > Mar > 93 > Engine Controls - Driveability Problems

Page 1
background image

Coolant Temperature Sensor/Switch (For Computer): Customer Interest
Engine Controls - Driveability Problems

NUMBER
205/906

GROUP
28

MODEL
200-700/900

TITLE
PROTECTION FOR CONNECTORS

B230F/FT, B234F
1989-->

MARKET
US and Canada

DATE
March 1993

REFERENCE:
TP 31903/1 (ENGLISH); 09/91; FUEL SYSTEM REGINA IGNITION
SYSTEM REX-I 
TP 31354/2 (ENGLISH); 09/90; FUEL SYSTEM LH JETRONIC 2.4 AND ELECTRONIC TURBO CONTROL UNIT 
TP 31621/1 (ENGLISH); 06/90; EZ 116 K IGNITION SYSTEM 
TP 31361/1 (ENGLISH); 12/88; LH-JETRONIC 2.4 FUEL SYSTEM 
TP 31079/1 (ENGLISH); 10/88; EZ 116 K IGNITION SYSTEM

Protection for connectors on the B23OF/FT, B234F engines

The engine management system connectors/components should be cleaned and protected if oxidation or driveability problems are encountered. If
diagnostic trouble codes (DTCs) have been recorded although no fault is detected, connectors/components should also be cleaned and protected. The
application of grease to connectors improves their long term reliability. The connectors shown in this service bulletin are of the type used in LH engine
management systems. The corresponding connectors in REX/Regina systems may be protected in the same manner.

Material

P/N

Rust remover

1161435-1 or 1161034-2

Low-temperature grease

1161417-9 or 1161236-3

Caution:
Do not use rust remover or grease on the heated oxygen sensor (HO2S) connectors.

B230F/FT, B234F ENGINE

Power space, idle air control valve (IAC valve), throttle position switch (TP switch), engine coolant temperature sensor (ECT sensor), engine speed
sensor (RPM sensor), knock sensor, EGR temperature sensor and mass air flow sensor (MAF sensor) connectors should be protected.

Caution:
Care should be taken not to damage or misplace the seals when disconnecting connectors.

Greasing of the above connectors has been introduced in production from the following chassis no.:

240: 482738 (4 door)

240: 947845 (5 door)

940: 128400 (4 door)

940: 079100 (5 door)

Procedure

Powertrain Management > Computers and Control Systems > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Technical Service Bulletins > Customer Interest for Coolant Temperature Sensor/Switch (For Computer): > 28205906 > Mar > 93 > Engine Controls - Driveability Problems

[PREV PAGE] [NEXT PAGE]