Question about 2001 Volkswagen Jetta TDI

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

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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.

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Posted on May 29, 2010

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Posted on Jan 02, 2017

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  • 7 Answers

SOURCE: 2000 Kia Sportage

it is in the thermostat houseing right in front of the radiator under air intake duct and it is easy to get to and easy to change

Posted on Dec 19, 2008

emissionwiz
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SOURCE: Temp sensor needs to be replaced

this does not mean the sensor is defective, it most likely means the engine thermostat is stuck open and the engine is not running hot enough to satisfy the computers preset temp requirements for minimum eng operating temp.

Posted on Apr 08, 2009

  • 121 Answers

SOURCE: engine hesitates or stalls

This might be what we call vapor lock try driving with your gas cap off and see if it still quits under the same conditions.

Posted on Jun 17, 2009

  • 67 Answers

SOURCE: changing a engine coolant sensor

disconnect the electrical connector that goes to the sensor make sure the engine has cooled put a deep well socket or a box wrench on the sensor turn it out and install the new one, put teflon sealant paste on the middle two threads

Posted on Jun 25, 2009

  • 18 Answers

SOURCE: where is the engine coolant temp. sensor located?

no
look dead in the midlle of it behind the alternator.

Posted on May 12, 2010

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1 Answer

Engine temp gauge not reading and ac will not turn on due to engine hot warning, diognostics say its a sensor, need to know which one and can i do it myself?2003 saturn vue


What diognostics say its a sensor ?????? No diagnostic's ever tell's you it's a sensor . You as a technician would need to prove that by testing electrical circuits , viewing coolant temp sensor . Hooking scan tool and trying to command the gauge with by directional control . The temp gauge not showing any temp. ? No movement ? Engine Coolant Temperature Gage Inaccurate or InoperativeStep Action
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Schematic Reference: Instrument Cluster Schematics
1
Did you perform the Instrument Cluster Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Instrument Cluster
2
Install a scan tool.
Turn the ignition ON, with the engine OFF.
With the scan tool, perform the Lamp and Gauge Check in the IPC Special Functions list.
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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
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Replace the IPC. Refer to Instrument Cluster Replacement .
Did you complete the replacement?
Go to Step 4
--
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Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Would hate for you to replace the coolant temp sensor an find out that's not the problem ! Does the vehicle start an run good ,trans mission shift good ? If so it's not the coolant temp sensor .
Engine Coolant Temperature Gage
The ECM sends coolant temperature as determined by the coolant temperature sensor to the BCM via CAN serial data. The IPC displays the engine coolant temperature with the gage when the BCM sends a class 2 message to the IPC indicating coolant temperature percentage. The engine coolant temperature gage defaults to cold (0°) or below if:
• The ECM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of class 2 communications with the BCM.
• The BCM detects a loss of CAN communications with the ECM.

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26020551-5lwd1tlkqjpbtdbalwg14peg-2-0.jpg

26020551-5lwd1tlkqjpbtdbalwg14peg-2-1.jpg

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