Volkswagen Parts Catalog Volkswagen Accessories Catalog Volkswagen Tech Information Volkswagen Tech Forums
 
Follow Pelican Parts on Facebook Follow Pelican Parts on Twitter Follow Pelican Parts on Instagram Follow Pelican Parts on YouTube Follow Pelican Parts on Pinterest Follow Pelican Parts on Tumblr
  Search our site:    
View Recent Cars  |   Cart  | Project List | Order Status | Help    
 >  >
Coolant Temperature Sensors Replacement
 
Bookmark and Share

Pelican Technical Article:

Coolant Temperature Sensors Replacement

Steve Vernon

Time:

2 hours2 hrs

Tab:

$10 to $25

Talent:

**

Tools:

Flathead screwdriver, catch pan

Applicable Models:

VW GTI (2006-09)

Parts Required:

New coolant temperature sensor, gasket/o-ring, coolant

Hot Tip:

make sure you get the old gasket out.

Performance Gain:

Piece of mind on engine temperature

Complementary Modification:

Coolant Flush

There are two coolant temperature sensors on the GTI MkV. One is located on the hose attached to the thermostat and the other is attached to the coolant distribution block on the left side of the engine. Replacing the coolant temperature sensors is a relatively easy job once you get to them. To get access to the upper sensor on the left side of the engine you will need to remove the engine cover or whatever after market air induction system you have. To get access to the sensor on the thermostat hose you will need to remove the alternator. Please see our articles on both of these procedures for further assistance.

Let the car cool so you don't have to work around a hot engine. When you remove the sensors coolant will escape. Some people leave the reservoir cap on to keep a vacuum in the system and minimize the amount of coolant that escapes and other people take this time to give the system a complete flush. I recommend draining and flushing your coolant system while performing this job, but if you are just going to just change the sensors please make sure you are prepared to properly catch and dispose of the coolant that will spill out and don't forget to top up the coolant level when you are done.

This photo illustrates the coolant temperature sensor on the left side of the engine (red arrow).
Figure 1

This photo illustrates the coolant temperature sensor on the left side of the engine (red arrow). I have removed the battery and tray to get better pictures but you do not need to remove these to perform this work. You will need to remove your engine cover or after market air intake system. Please see our articles on these projects for additional assistance.

Remove the electrical connection from the sensor (red arrow).
Figure 2

Remove the electrical connection from the sensor (red arrow). Compress the tab and pull the connection straight back.

You may be able to pull the plastic clip that keeps the sensor in place back with your hands but I like to start removing it with a screwdriver (red arrow).
Figure 3

You may be able to pull the plastic clip that keeps the sensor in place back with your hands but I like to start removing it with a screwdriver (red arrow).

Remove the clip from the pipe (red arrow).
Figure 4

Remove the clip from the pipe (red arrow).

Pull the sensor out.
Figure 5

Pull the sensor out. Most of the time the O-ring will not come out with the sensor. This sensor is missing the O-ring (red arrow).

Make sure to remove the old O-ring (red arrow) from the pipe and clean the area of any corrosion or debris.
Figure 6

Make sure to remove the old O-ring (red arrow) from the pipe and clean the area of any corrosion or debris.

The new sensor comes with a new O-ring and plastic clip.
Figure 7

The new sensor may or may not come with a new O-ring and plastic clip. (Check to make sure it's included--if not you will need to order it.) Installation is the reverse of removal and do not forget to top up the coolant.

To replace the sensor on the thermostat pipe you must first remove the alternator.
Figure 8

To replace the sensor on the thermostat pipe you must first remove the alternator. Please see our article on alternator removal for further assistance. With the alternator removed you can see the sensor attached to the thermostat pipe (red arrow).

Remove the electrical connection from the sensor (red arrow).
Figure 9

Remove the electrical connection from the sensor (red arrow). Compress the tab and pull the connection straight back.

Remove the clip from the pipe (red arrow, already removed).
Figure 10

Remove the clip from the pipe (red arrow, already removed).

These clips (red arrows) can crack or break when removed.
Figure 11

These clips (red arrows) can crack or break when removed. Always replace them with a new one.

Pull the sensor (red arrow) straight back out of the pipe.
Figure 12

Pull the sensor (red arrow) straight back out of the pipe. Make sure to get the old O-ring from the pipe and clean the area well (yellow arrow).

The new sensor comes with a new O-ring and plastic clip.
Figure 13

The new sensor comes with a new O-ring and plastic clip. Installation is the reverse of removal.

Whether you flushed the system or replaced the sensors while the coolant system was full do not forget to add the proper amount of coolant and distilled water until you reach the proper level.
Figure 14

Whether you flushed the system or replaced the sensors while the coolant system was full do not forget to add the proper amount of coolant and distilled water until you reach the proper level.

Bookmark and Share
Comments and Suggestions:
Jorge Comments: Trying my hardest to order with you guys but the link you sent me does not have any coolant temperature sensors please click the link yourself and tell me if you see it... it is not there.
August 8, 2016
  Followup from the Pelican Staff: I couldn't find it either. I will pass the info on to the Pelican web team.

Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need. - Nick at Pelican Parts
 
Jorge Comments: Can someone please post the part numbers for these sensors? I have the P2181 error code appearing on my 2009 VW GTI and figure this will hopefully correct it. The car runs at normal temperature so hoping it is just the sensor.
July 28, 2016
  Followup from the Pelican Staff: See this page, halfway down:

http://www.pelicanparts.com/cgi-bin/supertech/catalog.cgi?action=frameset&return-url=/cgi-bin/supertech/catalog.cgi%3Faction%3Dframeback%26page%3D2019&catalog-url=http%3A%2F%2Fwww.pelicanparts.com%2Fcatalog%2FSuperCat%2F4693%2FVAG_4693_WATRAD_pg1.htm %3Futm_source%3DSuperTech%23item0 - Nick at Pelican Parts
 
jose cabrera pepe Comments: congratulatios for your information et was exelent pd. sorry for little ingles
July 18, 2016
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
Jordan Comments: What's the part number for these sensors, figured this would be the quickest and easy item to change for now. Thanks
September 3, 2015
  Followup from the Pelican Staff:
I’m not the best with part numbers.

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.

- Nick at Pelican Parts
 

  Search our site:    

View Cart & CheckOut | Project List | Order Status |  Help    

 

[Home] [Customer Service] [Shopping Cart] [Project/Wish List]
  [Privacy Statement]  [Contact Us] [About Us] [Shipping] [Careers]

Copyright © Pelican Parts Inc. -    DMCA Registered Agent Contact Page

Page last updated: Mon 12/5/2016 02:35:29 AM