Add oil light keeps coming on..

[deltas69]

'93 2.3 five speed with 500K on it..the add oil light will come on often..even though the oil is full..I know it's some sort of sensor..anyone know where it's located and degree of difficulty for replacement ?? Thanks..

 

[adsm08]

The switch (not really a sensor) is in the side of the oil pan. Unplug it and see if the issue continues before trying to replace it. If the wire to the switch is rubbed on something it can cause that because all the switch does is ground a bulb when the oil level is too low.

 

[RonD]

Yes, +1 ^^^

The oil level sensor is on drivers side of oil pan in most Rangers
It is NOT grounded when oil level is OK
And Grounded when oil level is low

There is a delay circuit in the cab, like the anti-slosh module for the fuel gauge, it prevents Low Oil level light from coming on when cornering and oil moves to one side of the pan

Picture of the sensor, removed from oil pan with its wire plugged in, here: https://therangerstation.com/forums/showthread.php?t=139219

Picture of just the wire and connector here: https://contentinfo.autozone.com/znetcs/product-info/en/US/wl2/866/image/2/

There is a wire clip in the sensor that holds it in place so that whole black tube slides out, and no it can not leak with that connector unplugged.

So unplug it and then see if oil level light still comes and goes, if not then sensor is bad, if it still comes on then wire or the module is bad, grounding out somewhere

 

[deltas69]

Thanks for the help..gives me a starting point...