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Oil Level and Temperature Sensor Replacement
 
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Pelican Technical Article:

Oil Level and Temperature Sensor Replacement

Steve Vernon

Time:

2 hour2 hr

Tab:

$40

Talent:

**

Tools:

10mm, 19mm socket

Applicable Models:

VW Golf GTI (2000)
VW Golf GTI 1.8T (2002-05)
VW Golf GTI 20th Anniversary (2003)
VW Golf GTI 337 (2002)
VW Golf GTI GLS (2001)

Parts Required:

Oil Level, Temp Sensor, Oil, drain plug washer

Hot Tip:

Change the filter while your there

Performance Gain:

Proper working gauge

Complementary Modification:

Change your oil filter

Your oil level sensor is located on the bottom of the oil pan, which means you will have to drain the oil in the engine to perform this work; therefore you might as well change the oil filter while you are performing this job to save you time and money in the long run. Please see our article on changing your oil and filter. Note; not all GTI MkIV came with oil level/temperature sending sensors, as a matter of fact our project car did not have one.

Safely jack up and support your car.
Figure 1

Safely jack up and support your car. With the car safely off the ground you will need to remove the engine tray. There are four T25 Torx screws (red arrows) holding the tray on.

On the rear of the oil pan you will find the 19mm drain plug (red arrow).
Figure 2

On the rear of the oil pan you will find the 19mm drain plug (red arrow).

Use a 19mm socket and remove the drain plug (red arrow).
Figure 3

Use a 19mm socket and remove the drain plug (red arrow). Try not to drop the drain plug in the container you are using to catch the oil. Always dispose used motor oil according to the regulations where you live. Most oil change shops or your neighborhood parts store will take your old oil and filter to be recycled properly.

Once the oil has emptied reinstall the new drain plug with a new crush washer (red arrow).
Figure 4

Once the oil has emptied reinstall the new drain plug with a new crush washer (red arrow). I always like to make sure I reinstall the drain plug before I start working any where else just so I don't forget it later.

There where two different oil pans made for the GTI MkIV.
Figure 5

There where two different oil pans made for the GTI MkIV. The red arrow denotes where the oil level and temperature sensor will be if you have one. With the oil drained remove the three 10mm nuts (hardware my vary) and remove the old sensor.

Clean around the area where you removed the old sensor and then install the new one (red arrow).
Figure 6

Clean around the area where you removed the old sensor and then install the new one (red arrow). Reconnect the wiring harness.

Move to the top of the engine and remove the oil fill cap in the engine cover.
Figure 7

Move to the top of the engine and remove the oil fill cap in the engine cover. Begin by pouring 4 liters of oil into the engine and giving it a minute to get to the pan. The engine should take 4.6 liters of oil but it is easier to add oil than try and drain some out if you over fill. Start the car and let it warm up. Stop the car, let it sit for at least three minutes and check the level, add as needed but do not over fill. Note: on the turbo engines after an oil change ONLY run the engine at idle until the oil pressure warning light stops flashing. DO not touch the accelerator as revving the engine before proper oil pressure is restored could damage or destroy the turbo.

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Comments and Suggestions:
MsizA Comments: If there is not temperature sensor under the oil panel where can you find it. Am driving golf 4 gti 2000 model. U have change oil switch, overal the engin - top, ring , oil pump, is like I put new engin. The problem is that is now showing the light of oil presure but the temperature is normal at 90 and I drove it more that 300km while it has this problem. I took the car to be diogonised and I was told there is no problem with it. Please advice me what should I buy now.. Or where to put oil quantity sensor.
June 12, 2015
  Followup from the Pelican Staff: It should be in your oil pan. Possible the coding for your vehicle is skewed. I would check the vehicle coding and modules for fault codes. - Nick at Pelican Parts  

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