Question about Volkswagen Jetta
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Posted on Jan 02, 2017
Yes it is that easy. It should be a 4 pin connector located on the transmission side of the engine head in a plastic flange. Best is to wait for the engine to be cold. Unscew the radiator cap to relieve pressure but screw it right back on. On the 2.0L engines when you unclip the coolant sensor little or not coolant loss will happen if you do this. Just unplug it, pull out the clip, pull out the sensor, and the seal which sometimes stays stuck. Install the new sensor with a new seal lubricated with some coolant, make sure it's well seated and reinstall the clip. The sensor is well seated if the clip fits right over the top, just make sure both sides clipped into position. Replug it fill the coolant with VW original coolant mixed 50-50 with water if needed and done. If you have a fault you might need a scanner to erase the check engine or fault in the cluster.
What's the reason for changing it? Eratic temperature readings?
Posted on Nov 29, 2008
It’s located on the driver’s side of the engine on top /side of the head.. midway.. I don’t think you need to remove the engine cover to see it.. if it is the correct one it will have a dark green top.. the bad version has a black top… but they can all go out to lunch on you if old enough.
To replace.. make sure the car is cool..
You need a hood tool.. or small pair of pliers to remove the retaining clip that holds it in place.
Place a rag under and around it to catch the coolant.. you will lose less than a half a cup.. if that.
Pull the retaining clip back toward you.. try not to drop it.. (another good reason for the rag)
Wiggle the sensor.. pop it out.. and replace with the new green top one make sure you clean the area well.. and when you reinstall the new one that the c clip goes back on straight or it will leak.
Once you see the part out of the box.. you will understand how it works
Start the car.. check for leaks.. run until warm with the heater on.. top up the coolant overflow bottle with distilled water.. (if more than a half a cup.. you should mix the proper anti freeze and distilled water and then top up with that)
Posted on May 06, 2009
the only way you will find this out is to have a diagnostic machine plugged in and the fault memory read to check what fault is logged, it could be anything from a ABS wheel speed sensor to a control module fault, to save money in the long run i would advise you get the fault memory read first. hope this helps
Posted on Jul 29, 2009
For the 2.8L DOHC V-6:
Ignition Coil Connections
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Posted on May 07, 2010
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