Do oil sending units have history of leaking?

2008, I would start with replacing the oil pressure sending unit. Or maybe adding oil.

first need to buy oil pressure sending unit 3/8 deep socket remove oil pressure sending unit you need teflon tap sealer for oil sending unit threads.okay to replace oil pressure sending unit.you need safe raise support vechicle locate oil pressure sending unit next to the oil filter.disconnect oil pressure sending unit wire connector then use oil pressure sending unit 3/8 socket remove the sending unit.then take new oil pressure sending unit use teflon tape white plumbers tape or use thread sealer apply to the oil pressure sending unit threads then install new oil pressure sending unit and reconnect electrical connector to sending unit.then crank engine check for oil leak if all is good lower vechicle back to ground wait several minutes check engine oil level.you good to roll.

Click on link to view.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0996b43f80cb42b6&partName=Oil+Pressure+Sensor&partId=0996b43f80cb42b6

Yes the sending unit will leak oil if it's bad. It will leak where the electrical plug clicks into the unit. If you disconnect the plug and remove the unit, you can see on the plug end where the oil leaks thru.

IF OIL SENDING UNIT LEAKING OIL NEED REPLACING.WHEN INSTALLING NEW OIL SENDING UNIT.YOU CAN USE TEFLON PLUMBERS TAPE ON OIL SENDING UNIT THREADS BESURE WHEN INSTALLING NEW OIL SENDING UNIT.PUT TEFLON TAPE JUST A LITTLE ABOVE THE BOTTOM THREADS. SO YOUR OIL SENDING UNIT THREADS GET A GOOD GROUND FROM ENGINE BLOCK.SO IT WILL WORK CORRECTLY.

Yes it certainly can. Because oil has to pass into the sending unit under pressure in order to work. If the sending unit develops an internal leak it can leak a large amount of oil in a relatively short period of time.

Look up overhead above the sending unit for any oil that maybe dripping from above,makeing you think it's the sending unit leaking. If not then you may use a little thread sealer to seal the leak. Also check to see if the sending unit is loose and the threads may not be the same as the old unit you removed (metric/standard/pipe) Hope this will help you.

The oil pressure sending unit screws into the engine block so you will need to look between the oil pan and the head.I suggest that you try tightening your oil filter first.

In order to troubleshoot this problem correctly,you need to clean the motor first.

An intermittent/shorting oil sending unit is the source of the problem.

You need to make sure it's not an oil leak into the oil sending unit first.


After you clean the motor then look for oil leak.


Also make sure the wire from the oil sending unit wire is not touching the engine block.


Oil sending unit is cheap. It's an easy job.


Change it at your next oil change.

If cleaning the engine does not work, replace the oil press. sending unit. These senders on Jeeps have had a history of problems where they will work one day and not the next day.