INSTRUMENTATION SERVICE MANUAL NUMBER 22
Page 4D-12 90-860074--1 FEBRUARY 2002
TESTING
IMPORTANT: Use the following test procedure for checking accuracy of oil pressure
sender only. If oil pressure gauge indicates zero oil pressure, refer to SECTION 1C
- Troubleshooting.
1. Remove harness wire from sender. Temporarily insulate the wire to avoid a possible
short circuit.
2. Install a manual pressure gauge graduated in at least 100 kPa or 1 bar (10 psi)
increments, using a suitable T-fitting arrangement with the existing sender and adaptor
or fitting.
3. Connect an ohmmeter between sender terminal and sender case.
NOTE: Sender shown removed for visual clarity.
74281
a
b
c
72936
70686
a
a-Oil Pressure Sender
b-Adaptor Fitting
c-Manual Pressure Gauge Installation Location
4. Check the resistance values of the sender at pressures as shown and verified on manual
gauge with engine running. Replace sender if values are not correct.
Single Station Sender - 805267
Oil Pressure kPa (psi) Ohms Reading
0 (0) 240 15 Ω
413.7 (60) 103 15 Ω
5. When replacing sender, coat threads with Loctite Pipe Sealant with Teflon and install.
Tighten securely.
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