4.0L oil level sending unit.

[Flashflood]

I was wondering where the oil level sensor sending unit is on a 4.0 ohv. Our 93 aerostar check oil light seems to have a mind of its own.

 

[Rick]

If I recall it's on the oil pan.

 

[RangerX]

yes, front driver side corner area.

 

[BrooklynBay]

You could take it out to clean it. Maybe the sensor has sediment stuck on it so it's not working correctly.

 

[Josh P]

I'd replace it if you're taking it off. I've had them fail, then leak oil out of the sensor.

 

[Flashflood]

I'd replace it if you're taking it off. I've had them fail, then leak oil out of the sensor.

Any idea what size it is. I've tried a 1in and even that was to small.

 

[RangerX]

Any idea what size it is. I've tried a 1in and even that was to small.

I just use vice grips

 

[Josh P]

It's been long enough I'm not sure if it's 27mm or 28mm that I used to replace mine several years ago

 

[Stic-o]

Need to replace mine in the Sport. If it's below about 50* it doesn't work until the engine warms up a bit. So I have the check gauge light on every morning in the winter. I probably will not see it now until November.

 

[Flashflood]

Well it's clean now for an oil change and see what happens.

 

[Brian1]

Here is my how-to writeup on it from years ago - How To: Replace Leaky Ford Explorer - Ranger Low Oil Sensor