Question about 1999 Volkswagen New Jetta

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1999 VW New Beetle Coolant Temp Sensor

We reviewed the 1999 Jetta information and are unable to locate the sensor on the 1999 New Beetle we are working on now. The VW parts shop gave us the green sensor to replace the black sensor. Where is it located in the 1999 New Beetle?
Thanks

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At the back of the cylinder head gearbox end it sits in the water pipe

Posted on Dec 20, 2008

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On the coolant flange on the left side of the engine. the flange is
connected to the upper radiator hose

Posted on Sep 14, 2012

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1 Answer

Coolant sensor replacement


The exact locations and picture of Engine Coolant Temp (ECT) sensors on 2001 VW Jetta TDI:

1. ECT sensor 1 placed on cylinder head:

tdisline_485.jpg




2. ECT sensor 2 placed on the left bottom side of the radiator:

tdisline_486.jpg

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Need exact location and picture of coolant temp sensor on tdi vw jetta 2004 please Thanks


The exact locations and picture of Engine Coolant Temp (ECT) sensors on 2004 VW Jetta TDI:

1. ECT sensor 1 placed on cylinder head:

4b3512b.jpg


2. ECT sensor 2 placed on the left bottom side of the radiator:

9ce325e.jpg

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P0117 Engine Coolant Temp Sensor Circuit Low Input

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WHERE IS THE SENSOR LOCATED?


This is a known problem. The temp sensors go bad every so often. VW recognized this a few years back, updated the sensor and accordingly changed the colour from brown to green. oops.... They still go bad. The sensor is on the drivers side of the engine, on the back of the head in what looks like the thermostat housing. If you have a man trans there's a set of glow plugs commin out of it. This is the only temp sensor on the TDI. There's a plastic horseshoe clip (the dealer should have offer you one when you bought the sensor) you have to pop out, then wiggle the sensor until it comes out. MAKE SURE THE OLD O-RING COMES OUT, this will make instaling the new sensor much easier and will prevent your all your coolant from leaking out.... Yah, I seen it done, not good. Worst part is you can't see what you are dooing so good but its fairly simple. Good luck and happy motoring

Dec 09, 2009 | 2002 Volkswagen Jetta TDI

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My check engine light came on in my 2002 New VW Beetle, stick shift not a turbo. Ran code and says p0117 temp circuit, I may need new Coolant temperature sensor. My a/c died two weeks ago. Could this be...


If it's a 2.0L, then the coolant sensor would be an easy fix. It's between the Air box / engine (on top of the coolant flange on the end of the head). If you do that, you probably should do a thermostat. Usually it's recommended to replace the thermostat when you do a coolant temp sensor, but that's up to you.

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2002 VW Beetle Temp gauge flashing, why?


the coolant temp sensor is by far the most common fault.the only other thing it could be is the sensor in the coolant header tank.if you disconect the 2 pin sensor from where you top the coolant up and bridge out the 2 pins in the connector with a bit of wire.if this cures the fault you know its the coolant level sensor.if it persists and its straight from a cold start then the coolant temp sensor is the most likley cause.hope this helps.

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How to replace a coolant temp sensor on a 2001 vw jetta 2.0


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?

Nov 28, 2008 | 1999 Volkswagen New Jetta

2 Answers

2000 Beetle 2.0 gas engine


so please dont forget to rate the chat after end of the session. this is just a information to you. always use end
session button to end the session.

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How to replace a coolant temp sensor on a 2001 vw jetta 2.0


here is a picture of where it's located on your jetta:

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Jun 21, 2008 | 2001 Volkswagen Jetta TDI

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