Mechanics

LEXUS IS 300 SENSOR PROBLEM

2001 Lexus IS 300

Engine Mechanical problem
2001 Lexus IS 300 4 cyl Four Wheel Drive Automatic 185672 miles

I have a 2001 Lexus IS 300 engine oil light on replace oil pressure sensor light still flash on and off oil gauge up and down.
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Wavilyh
January 10, 2009.




Physically check your oil level. If oil level is good, then you have a faulty oil level/pressure sensor. Located on lower left front of engine.


http://www.2carpros.com/forum/automotive_pictures/55316_01is300hood_1.jpg


Tiny
Zackman
Jan 10, 2009.
Hello -

If I understand you correctly, your engine oil light was flashing on and off and the oil gauge goes up and down.

You replaced the oil pressure sensor and it still does this..........is this correct? And you have a oil pressure sender on this car.........so this is what you are referring to as the sensor.....correct?

I have attached a check for the Oil Pressure Warning Lamp/Indicator............please do that check.


http://www.2carpros.com/forum/automotive_pictures/248015_Oil_pres_Warning_LIght_1.gif



INSPECT LOW OIL PRESSURE WARNING LIGHT
a. Disconnect the connector from the warning switch and ground terminal on the wire harness side connector.
b. Turn the ignition switch ON and check that the warning light lights up. If the warning light does not light up, test the bulb.

I have also attached the check for the Oil level Warning Indicator


http://www.2carpros.com/forum/automotive_pictures/248015_Oil_level_indicator_1.gif



INSPECT ENGINE OIL LEVEL WARNING LIGHT
a. Disconnect the connector from the switch.
b. Run the engine.
c. Turn the ignition switch ON, check that the warning light lights up approximately 40 seconds later. If the warning light does not light up, inspect bulb or wire harness.

I have also attached the check for the oil level sensor...

INSPECT ENGINE OIL LEVEL WARNING SENSOR


http://www.2carpros.com/forum/automotive_pictures/248015_Oil_sensor_1_1.gif



Check that continuity exists between terminals when the sensor-sensed temperature drops to 40 C or less with the float down.


http://www.2carpros.com/forum/automotive_pictures/248015_Oil_sensor_2_1.gif



b. Heat the switch to above 60 C (140 F) in an oil bath.
c. Check that there is continuity between terminals with the switch ON (float down).
d. Check that there is no continuity between terminals with the switch OFF (float up). If operation is not as specified, replace the switch.


http://www.2carpros.com/forum/automotive_pictures/248015_Oil_sensor_3_1.jpg



http://www.2carpros.com/forum/automotive_pictures/248015_Oil_sensor_4_1.jpg



INSPECT ENGINE OIL LEVEL WARNING SENSOR CIRCUIT
Disconnect the switch connector and inspect the connector on wire harness side, as shown.
If continuity is not as specified, inspect the wire harness or ground point.

My thought is it may be the oil level sensor..........

Thank you very much for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

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ImpalaSS
Jan 10, 2009.

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