940 L4-2.3L SOHC VIN 88 B230F (1992)
Coolant Temperature Sensor/Switch (For Computer): All Technical Service Bulletins
Engine Controls - Driveability Problems
PROTECTION FOR CONNECTORS
US and Canada
TP 31903/1 (ENGLISH); 09/91; FUEL SYSTEM REGINA IGNITION
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.
1161435-1 or 1161034-2
1161417-9 or 1161236-3
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.
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)