Question about 2003 Volkswagen Jetta TDI

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I'm car illilterate so please bear with me. I have a 2003 Jetta 1.8t and I need to have the front 02 sensor replaced. I had the back replaced by the dealer a few months ago. This time I took my ca

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O2 sensor as in lambda sensor in the exhaust you can only get 4 or 5 pin and I would imagine it been a 4 pin as its pre cat . I would buy a OE one

Posted on Jan 11, 2013

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Posted on Jan 02, 2017

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SOURCE: 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?

Posted on Nov 29, 2008

  • 1214 Answers

SOURCE: I have a 2003 VW jetta tdi

You've lost engine coolant somewhere, and need to fill the engine back up with the VW special G12 coolant.

Then find the leak, which will be in one or more of the following places -
Water hoses to heater core, including any other coolant carrying hoses in the engine compartment
Radiator hoses
Plastic manifold bolted to side of engine which is known to leak (have replaced on an '01 VW Beetle, and an '02 Jetta, both members of our family in the past few years.).
Overflow reservoir cracked
Radiator leak.

Reply back what you find. If the engine got too hot, you may need to have the thermostat replaced.


Posted on Feb 03, 2009

  • 74 Answers

SOURCE: how to replace a coolant temp sensor on a 2001 vw jetta 2.0

YES & IT REALLY IS THAT EASY

Posted on Feb 18, 2009

  • 221 Answers

SOURCE: 02 Jetta 2.0 Check Engine Light

Hi, only way to really know what the check engine light is for is to run a diagnostic check on the pcm using a OBD II diagnostics tool, you can buy one at most auto parts store's or if you don't want to spend the money on one some auto parts store's will do a diagnostics check on your vehicle for free, good luck.

Posted on Mar 29, 2009

  • 257 Answers

SOURCE: 2006 Jetta TDI Electrical!!!

There is a known issue with the wiring harness in the doors. It's possible that the passenger door also has a bad harness (assuming they swapped out the one in the driver's door) Is that a correct assumption? It may still be related to your original problem too. I've heard of disconnecting the battery for 20 minutes to reset the electrical (door switches). You should def give that a try - it's free.
Also check out the forums at www.tdiclub.com - those guys know their VW TDI's...

Posted on Jul 13, 2009

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1 Answer

Where are the speed sensors on a 2004 chevy trailblazer?


Assuming that you're talking about the front wheel speed sensors...
Your best bet is to replace both from wheel hub/bearing assemblies.

They'll cost about $100-$150 each.
When the wheel speed sensors are setting ABS codes it usually means that the bearings are bad.
When you replace the whole hub assembly, a new sensor is already installed in that hub. If it just the sensor (unlikely that just the front sensors alone are going bad) the sensor itself is usually 3/4 of the price of a new hub anyway.

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2003 jetta gls rumble in the front end


sounds like a gearbox bearing ,,,this sounds like a growling noise usually when accelerating although as the problem gets worse it can happen constantly ,,, wheel bearings can growl too but will give a constant noise regardless of acceleration ,,, you need to see to this quickly as the more you drive you will cause more damage and cost to you ,,,,bearings will fix it in the early stages but if more damage is done you could have to pay for new gears and shafts which is expensive

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Need instructions w/diagrams for replacement of front wheel bearings for 2003 ford sport track


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& 4 bolts that hold the bearing hub on

Not to be hurtful here,but instructions?
I don't see that helping general mechanical
aptitude

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Need to know which is the glow plug number 3 on my jetta tdi


Look at the front of the motor and count back. The front is number 1 and so on.

Feb 22, 2010 | 2003 Volkswagen Jetta TDI

1 Answer

Install heated oxygen sensor number 1 in volswagen jetta


Hi:
The Number 1 Heated Oxygen sensor is located in front of the catalytic converter. You would need to get the car up in the air, and then disconnect the electrical connector, and possibly need a special socket to remove the sensor. Also remember to purchase and use Oxygen sensor safe anti sieze compound on the threads of the new sensor, if you do this your self

Oct 30, 2009 | 2003 Volkswagen Jetta TDI

1 Answer

03 Jetta headlight warning buzzer does not sound.


The sensor is in the door panel itself. The only fix I've found is to dismantle the door to replace the circuit board/sensor contained near the outside door handle. My 02 Jetta hasn't dinges for a few years now.

Jun 05, 2009 | 2003 Volkswagen Jetta TDI

1 Answer

I have a 2003 VW jetta tdi


You've lost engine coolant somewhere, and need to fill the engine back up with the VW special G12 coolant.

Then find the leak, which will be in one or more of the following places -
Water hoses to heater core, including any other coolant carrying hoses in the engine compartment
Radiator hoses
Plastic manifold bolted to side of engine which is known to leak (have replaced on an '01 VW Beetle, and an '02 Jetta, both members of our family in the past few years.).
Overflow reservoir cracked
Radiator leak.

Reply back what you find. If the engine got too hot, you may need to have the thermostat replaced.


Feb 03, 2009 | 2003 Volkswagen Jetta TDI

1 Answer

How to install o2 senor on 1996 jetta


get the o2 sensor off just use an open end wrench turn counterclockwise disconnect the connector and put the new one on ?please rate my respose thank you very much

Feb 01, 2009 | 1996 Volkswagen Jetta

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