Originally Posted by Endlessgts
Originally Posted by 8.0L>1.8T
I'm sure others will chime in soon on this but I'd start by ruling out the oil sending unit, oil pressure switch, and oil pressure gauge. These are reasonably easy to check and have detailed instructions on pages 8E-2 thru 8E-4.
Good luck man.
Im assuming that's in the service manual....Suggestions on where I can get that? Do they offer an online or e-manual?
Mike has a the manuals you need!
Direct from the service manual:
Engine oil pressure sending unit test-
(1)To test the sending unit, measure the resistance between the sending unit terminal and the metal housing. The ohmmeter should read between 0 and 10 ohms. (2) Start the engine. The ohmmeter should read between 30 and 55 ohms, depending on the engine speed, oil temperature, and oil viscosity. (3) if the above results are not obtained, replace the switch.
Engine Oil Pressure Switch Test-
(1) To test the normally closed oil lamp circuit, disconnect the locking connector and measure the resistance between the switch terminal and the metal housing. The ohmmeter should read 0 ohms. (2) start the engine. If there is oil pressure, the ohmmeter should read an open circuit. If not, replace switch.
Engine oil pressure gauge Test-
(1) ignition switch in the on position and the engine not running, the engine oil pressure gauge should read zero. (2) ignition switch in the on position, the engine not running, disconnect the oil pressure sensor and engine oil pressure gauge should read maximum oil pressure. If okay, test oil pressure sensor.
Low oil pressure warning lamp Test-
to test the system, turn the ignition key to the on position. If the lamp fails to light, inspect for broken or disconnected wires at the oil pressure sensor unit located at the front of the engine.