RPM Sensor - Improved
SECTION2
GROUP
28
NO.
915
DATE
July 1994
RE:
New RPM sensor
740/940 ALL
Fault tracing
Repairs
Maintenance
REFERENCE:
TP 32043/1, SECTION 2 (23, 28), MULTIPORT FUEL INJECTION (MFI) SYSTEM LH 2.4, 700/900 1989- TP 31903/1, SECTION 2 (23, 28), FUEL SYSTEM REGINA 700 1988-
New RPM sensor
An improved flywheel RPM sensor, P/N 3547847-8, was introduced into production during week 48, 1993. The new sender is marked with a white ring, 10 mm from the connector, and has improved cable attachment using clips. When replacing the flywheel RPM sensor on cars made before week 48 1993, attachment, cleaning and greasing of the connector should be carried out according to this service bulletin.
Replacement of RPM sensor, method
Remove RPM sensor connector at the firewall.
Remove the RPM sensor from the bracket on the gearbox.
Install the new RPM sensor. Torque to 8 N-m (6 ft.lbs).
Install the small clip, P/N 3549774-8, on the coolant pipe and the large one, P/N 9146999-9, on the hose.
Install the RPM sensor cable in the clips as shown in the picture.
Check connectors
The connector sections should be greased. If they are not greased, spray rust solvent P/N 1161435-1 onto the connector halves.
Grease the connector (if this has not been done already)
Squeeze grease, P/N 1161417-9 into female contact directly from the tube.
Make sure that all the cavities in the housings are filled.
Do not fill the protective cover with grease.
Replace the connector
Make sure that the seal is firmly seated before replacing the connector.
Start the motor and let it run for about 1/2 minute.
Reset the diagnostic (OBD) system.
WARRANTY STATEMENT:
Claims may be submitted under the New Car Limited Warranty when a manufacturing defect is present using claim type: 01
Operation No. Labor description Time allowance
282912 RPM sensor replace 0.3 hr
283053 Reset DTCs 0.3 hr