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Pelican Technical Article:

Oil Pressure Sender Replacement

Jared Fenton

Time:

1 hour1 hr

Tab:

$11

Talent:

****

Tools:

Small standard screwdriver, 24mm wrench

Applicable Models:

Jetta MkIV 2.0L (1998-05)

Parts Required:

Oil pressure sender

Hot Tip:

Be ready for a few drops of oil to spill out

Performance Gain:

Confidence the sender is working correctly

Complementary Modification:

Change engine oil

The oil pressure sender is used to illuminate the oil pressure light on the dashboard when there is no pressure in the lubrication system. You'll notice that the light goes on when the engine is not running. Once the engine is started, the light goes out. Over the years, the sender can fail, sometimes even leak from the sender housing.

Replacing the sender is relatively easy, although it does require removing a few things for access. There isn't a lot of room to work with here. You'll need to remove the secondary air pump and the coil pack to access the sender. See our articles on Secondary Air Pump Removal and Spark Plug Wire and Coil Pack Replacement for more information.

Keep in mind that you don't need to drain the oil to replace the sender, although I do recommend waiting after running the engine. This will allow all the oil to drain back into the oil pan.

The oil pressure sender is located just up from the oil filter, on the side of the oil cooler/adapter.
Figure 1

The oil pressure sender is located just up from the oil filter, on the side of the oil cooler/adapter. Press the tab on the electrical connector (green arrow) using a small screwdriver and pull it off the sensor.

Use a 24mm wrench to loosen and remove the oil pressure sender from the oil cooler/adapter.
Figure 2

Use a 24mm wrench to loosen and remove the oil pressure sender from the oil cooler/adapter.

The new oil pressure sender simply screws into place.
Figure 3

The new oil pressure sender simply screws into place. Be sure that you have the small sealing ring (green arrow) installed on the new sender. Re-attach the electrical connector and you're done.


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