Question about 2002 Volkswagen Jetta TDI

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How to test ECT sensor? 2002 jetta TDI, temperature indicator would go up and down but car was warm and hater output ok

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Replace bad Engine Coolant Temperature (ECT) sensor. ECT sensor is placed in the right back side of the cylinder head on 2002 VW Jetta 1.9 TDI. See picture below:

how to test ECT sensor? - tdisline_388.jpg

Posted on Mar 30, 2011

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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

Apr 28, 2011 | 2001 Volkswagen Jetta TDI

2 Answers

I have a 2002 VW Jetta and the temperature gauge keeps going up and down... Is this something to worry about ?


Replace the Engine Coolant Temperature (ECT) sensor. ECT sensor is placed in the right back side of the cylinder head on 2002 VW Jetta 1.9 TDI. See picture below:

tdisline_212.jpg

Please do rate my response. Thanks!

Feb 04, 2011 | 2002 Volkswagen Jetta TDI

1 Answer

Engine light on code p1296 was found the car is a 2001 jetta 80000 miles runs good all censor replace in the last five months it warms up fast idle good. pass smog. what can the problem be. thank you...


VW DTC 17704 (P1296) - Cooling system malfunction.

Coolant Temperature Sensor (CTS) is faulty and reading an incorrect temp'.

Replace with the new version of the sensor, clear the code.

If indicated coolant temp' is too low the thermostat is sticking open.

Jan 15, 2011 | 2002 Volkswagen Jetta TDI

1 Answer

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

Sep 21, 2010 | 2004 Volkswagen Jetta

1 Answer

Need to change the engine coolant temp sensor, Where is it and what are the steps to changing it.


Heed of engine temperature!!! (Wait for engine cooling).
The engine coolant temperature (ECT) sensor is placed on back of cylinder head, towards clutch side. Disconnect the electrical cable plug and remove the fastening circlip. Remove the ECT sensor by pulling out from cylinder head. Extract also old "O-ring" sealing rubber. Install new ECT sensor with new "O-ring" sealing rubber.

Please rate my response. Thanks!

May 29, 2010 | 2001 Volkswagen Jetta TDI

1 Answer

Temperature sensor causing check engine indicator to come on...how do I change it how do I change a glow plug


The temperature sensor/ECT/ is black squire 4 pins sensor with pinlock.Before changing ensure there is not pressure in engine coolant system by opening engine coolant tank.Be very carefull ! If the engine is on operation temperature there is about 1bar pressure.If so open the cup of the tank slowly and wait the pressure going out.Pse note when you pullout the sensor the O-ring always stayng in.Take it out before fitting the new one.

Apr 25, 2010 | 2002 Volkswagen Jetta TDI

1 Answer

Vw jetta 2002 code p1296/po118


Both of these codes indicate trouble with the signal from the coolant temperature sensor.

So either the sensor is bad. The thermostat is not working properly and the coolant temperature is truly way out. The wiring to the sensor is short or open. The computer is bad and it is manifesting itself through this fault.

Does the car warm up properly? If it runs hot, or takes forever to warm up, this indicates a problem with the thermostat.

If the car runs at the proper temperature the next thing to look at is the coolant temp sensor and wiring. Some resistance values for VWs are here:
http://forums.vwvortex.com/zerothread?id=4267675

You might also be interested in this recall if your car is below 100k miles:
http://forums.vwvortex.com/zerothread?id=3694323

Jan 19, 2010 | 2002 Volkswagen Jetta TDI

1 Answer

02 VW Jetta TDI with ALH engine glow plug


this is a common problem for these cars glow plugs go bad like spark plugs however the smoke would lead to bad mass airflow meter. it is not telling ecu corrcet miss. disconnect mass airflow meter. when cold see if this makes it start better. it should would means you need new m.a.f. glow plug issue take a test light place clamp on positive of battery then pull off glow plug connectors place tip of test light on glow plug the bad one will have a dull light unlike the good one which will be brighter. will need new plugs and wire harness four **** connectors and wire striper and crimper will fix concern good luck

Sep 01, 2009 | 2002 Volkswagen Jetta TDI

1 Answer

Temperature sensor


the computer doesn't say replace the sensor, it says that there is a problem in the sensor circuit, that can be the wiring, the PCM or the sensor, u must check all three.

Jun 16, 2009 | 2002 Volkswagen Jetta TDI

2 Answers

Temperature Sensor in 2002 Jetta TDI


NO the temp sensor is located on the head near the heater hoses close to the 4th cylinder if i am not wrong it is color coded and green

Nov 12, 2008 | 2002 Volkswagen Jetta TDI

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